Results for "D. Zhao"

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Detecting relic gravitational waves in the CMB: Optimal parameters and their constraintsFeb 11 2009Mar 27 2009The prospect of detecting relic gravitational waves (RGWs), through their imprint in the cosmic microwave background radiation, provides an excellent opportunity to study the very early Universe. In simplest viable theoretical models the RGW background ... More
Better Image Segmentation by Exploiting Dense Semantic PredictionsJun 05 2016It is well accepted that image segmentation can benefit from utilizing multilevel cues. The paper focuses on utilizing the FCNN-based dense semantic predictions in the bottom-up image segmentation, arguing to take semantic cues into account from the very ... More
An octonion algebra originating in combinatoricsFeb 14 2010Jun 16 2010C.H. Yang discovered a polynomial version of the classical Lagrange identity expressing the product of two sums of four squares as another sum of four squares. He used it to give short proofs of some important theorems on composition of delta-codes (now ... More
Soliton interaction in a fiber ring laserOct 30 2009We have experimentally investigated the soliton interaction in a passively mode-locked fiber ring laser and revealed the existence of three types of strong soliton interaction: a global type of soliton interaction caused by the existence of unstable CW ... More
Maximum Flux Transition Paths of Conformational ChangeAug 03 2009Jan 01 2010Given two metastable states A and B of a biomolecular system, the problem is to calculate the likely paths of the transition from A to B. Such a calculation is more informative and more manageable if done for a reduced set of collective variables chosen ... More
Detecting relics of a thermal gravitational wave background in the early UniverseJul 24 2009Sep 30 2009A thermal gravitational wave background can be produced in the early Universe if a radiation dominated epoch precedes the usual inflationary stage. This background provides a unique way to study the initial state of the Universe. We discuss the imprint ... More
On the road to discovery of relic gravitational waves: The TE and BB Correlations in the cosmic microwave background radiationOct 06 2008Jan 27 2009The detection of primordial gravitational waves is one of the biggest challenges of the present time. The existing (Wilkinson Microwave Anisotropy Probe) observations are helpful on the road to this goal, and the forthcoming experiments (Planck) are likely ... More
Molecular water accumulation on silica measured by land-contrast interferometry with picometer height resolutionAug 04 2009We observed water film accumulation on silica surfaces in the air to 2 picometer resolution using optical land-contrast (LC) interferometry. The land-contrast approach is non-destructive and allows real-time measurement of thickness variation of small ... More
Relic gravitational waves in the light of 7-year Wilkinson Microwave Anisotropy Probe data and improved prospects for the Planck missionMay 25 2010Aug 12 2010The new release of data from Wilkinson Microwave Anisotropy Probe improves the observational status of relic gravitational waves. The 7-year results enhance the indications of relic gravitational waves in the existing data and change to the better the ... More
Primordial Gravitational Waves and Cosmic Microwave Background RadiationApr 06 2010This is a summary of presentations delivered at the OC1 parallel session "Primordial Gravitational Waves and the CMB" of the 12th Marcel Grossmann meeting in Paris, July 2009. The reports and discussions demonstrated significant progress that was achieved ... More
Exotic Topological Types of Majorana Zero-modes and Their Universal Quantum ManipulationMay 16 2013Jan 19 2014From our general index theorem that characterises faithfully the boundary-bulk correspondence of topological superconductors and insulators, we reveal rigorously that four topologically distinct types of Majorana zero-modes can emerge at the ends of superconducting ... More
On the structural stability of planar quasihomogeneous polynomial vector fieldsOct 19 2011Denote by $H_{pqm}$ the space of all planar $(p,q)$-quasihomogeneous vector fields of degree $m$ endowed with the coefficient topology. In this paper we characterize the set $\Omega_{pqm}$ of the vector fields in $H_{pqm}$ that are structurally stable ... More
Propagation and Interaction Properties of Successive Coronal Mass Ejections in Relation to a Complex Type II Radio BurstSep 29 2017We examine the propagation and interaction properties of three successive coronal mass ejections (CMEs) from 2001 November 21-22, with a focus on their connection with the behaviors of the associated long-duration complex type II radio burst. In combination ... More
Decision table for classifying point sources based on FIRST and 2MASS databasesAug 31 2007With the availability of multiwavelength, multiscale and multiepoch astronomical catalogues, the number of features to describe astronomical objects has increases. The better features we select to classify objects, the higher the classification accuracy ... More
Topological Classification and Stability of Fermi SurfacesNov 30 2012Jun 26 2013In the framework of the Cartan classification of Hamiltonians, a kind of topological classification of Fermi surfaces is established in terms of topological charges. The topological charge of a Fermi surface depends on its codimension and the class to ... More
Fractional Quantum Hall States at 1/3 and 5/2 Filling: the Density-Matrix Renormalization Group CalculationsMar 03 2011Apr 25 2011In this paper, the density-matrix renormalization group method is employed to investigate the fractional quantum Hall effect at filling fractions $\nu=1/3$ and 5/2. We first present benchmark results at both filling fractions for large system sizes to ... More
Bound soliton fiber laserOct 30 2009Experimental study on the soliton dynamics of a passively mode locked fiber ring laser firstly revealed a state of bound soliton operation in the laser, where two solitons bind together tightly with fixed pulse separation. We further report on the properties ... More
The Chromospheric Activity, Age, Metallicty and Space Motions of 36 Wide BinariesJan 17 2011We present the chromospheric activity (CA) levels, metallicities and full space motions for 41 F, G, K and M dwarf stars in 36 wide binary systems. Thirty-one of the binaries, contain a white dwarf component. In such binaries the total age can be estimated ... More
The Initial-Final Mass Relation among White Dwarfs in Wide BinariesDec 01 2011We present the initial-final mass relation derived from 10 white dwarfs in wide binaries that consist of a main sequence star and a white dwarf. The temperature and gravity of each white dwarf was measured by fitting theoretical model atmospheres to the ... More
Stellar Stream Candidates in the Solar Neighborhood Found in the LAMOST DR3 and TGASAug 05 2017We have cross-matched the LAMOST DR3 with the Gaia DR1 TGAS catalogs and obtained a sample of 166,827 stars with reliable kinematics. A technique based on the wavelet transform was applied to detect significant overdensities in velocity space among five ... More
Mechanism of multisoliton formation and soliton energy quantization in passively mode-locked fiber lasersOct 30 2009We report results of numerical simulations on the multiple soliton generation and soliton energy quantization in a soliton fiber ring laser passively mode-locked by using the nonlinear polarization rotation technique. We found numerically that the formation ... More
Efficient Task Collaboration with Execution UncertaintySep 17 2015We study a general task allocation problem, involving multiple agents that collaboratively accomplish tasks and where agents may fail to successfully complete the tasks assigned to them (known as execution uncertainty). The goal is to choose an allocation ... More
Incentive Design for Ridesharing with UncertaintyMay 07 2015We consider a ridesharing problem where there is uncertainty about the completion of trips from both drivers and riders. Specifically, we study ridesharing mechanisms that aim to incentivize commuters to reveal their valuation for trips and their probability ... More
Convergent Iterative Solutions for a Sombrero-Shaped Potential in Any Space Dimension and Arbitrary Angular MomentumOct 25 2005We present an explicit convergent iterative solution for the lowest energy state of the Schroedinger equation with an $N$-dimensional radial potential $V=\frac{g^2}{2}(r^2-1)^2$ and an angular momentum $l$. For $g$ large, the rate of convergence is similar ... More
A New Method to Derive Low-Lying N-dimensional Quantum Wave Functions by Quadratures Along a Single TrajectoryMay 11 2000May 29 2000We present a new method to derive low-lying N-dimensional quantum wave functions by quadrature along a single trajectory. The N-dimensional Schroedinger equation is cast into a series of readily integrable first order ordinary differential equations. ... More
Relations Between Low-lying Quantum Wave Functions and Solutions of the Hamilton-Jacobi EquationOct 12 1999We discuss a new relation between the low lying Schroedinger wave function of a particle in a one-dimentional potential V and the solution of the corresponding Hamilton-Jacobi equation with -V as its potential. The function V is $\geq 0$, and can have ... More
Bound states of dispersion-managed solitons in a fiber laser at near zero dispersionOct 30 2009We report on the observation of various bound states of dispersion-managed (DM) solitons in a passively mode-locked Erbium-doped fiber ring laser at near zero net cavity group velocity dispersion (GVD). The generated DM solitons are characterized by their ... More
Multi-wavelength dissipative soliton operation of an erbium-doped fiber laserJul 10 2009We report on the generation of multi-wavelength dissipative soliton (DS) in an all normal dispersion fiber laser passively mode-locked with a semiconductor saturable absorber mirror (SESAM). We show that depending on the strength of the cavity birefringence, ... More
Iterative Solutions for Low Lying Excited States of a Class of Schroedinger EquationJul 12 2006The convergent iterative procedure for solving the groundstate Schroedinger equation is extended to derive the excitation energy and the wave function of the low-lying excited states. The method is applied to the one-dimensional quartic potential problem. ... More
Observation of polarization domain wall solitons in weakly birefringent cavity fiber lasersJul 31 2009We report on the experimental observation of two types of phase-locked vector soliton in weakly birefringent cavity erbium-doped fiber lasers. While a phase-locked dark-dark vector soliton was only observed in fiber lasers of positive dispersion, a phase-locked ... More
A Solar Eruption with Relatively Strong Geo-effectiveness Originating from Active Region Peripheral Diffusive PolaritiesJul 09 2018Jul 10 2018We report the observations of a moderate but relatively intense geo-effective solar eruption on 2015 November 4 from the peripheral diffusive polarities of active region 12443. We use space-borne Solar Dynamics Observatory and ACE observations. EUV images ... More
Dark Pulse Emission of A Fiber LaserOct 30 2009We report on the dark pulse emission of an all-normal dispersion erbium-doped fiber laser with a polarizer in cavity. We found experimentally that apart from the bright pulse emission, under appropriate conditions the fiber laser could also emit single ... More
Coherent energy exchange between vector soliton components in fiber lasersMar 11 2009We report on the experimental evidence of four wave mixing (FWM) between the two polarization components of a vector soliton formed in a passively mode-locked fiber laser. Extra spectral sidebands with out-of-phase intensity variation between the polarization ... More
Propagation Characteristics of Two Coronal Mass Ejections From the Sun Far into Interplanetary SpaceFeb 14 2017Propagation of coronal mass ejections (CMEs) from the Sun far into interplanetary space is not well understood due to limited observations. In this study we examine the propagation characteristics of two geo-effective CMEs, which occurred on 2005 May ... More
Anomalous Hall Effect in Chemically Disordered L10-Mn1.5GaDec 07 2013Jul 20 2016The anomalous Hall effect (AHE) in perpendicularly magnetized L10-Mn1.5Ga single-crystalline films is investigated as a function of degree of long-range chemical ordering and temperature. Our results provide firm evidence that phonons has negligibly smaller ... More
Nonadiabatic geometric quantum computation in decoherence-free subspaces based on unconventional geometric phasesDec 27 2016Nonadiabatic geometric quantum computation in decoherence-free subspaces has received increasing attention due to the merits of its high-speed implementation and robustness against both control errors and decoherence. However, all the previous schemes ... More
Generalized Ito Formulae and Space-Time Lebesgue-Stieltjes Integrals of Local TimesMay 10 2005Aug 10 2015Generalised Ito formulae are proved for time dependent functions of continuous real valued semi-martingales. The conditions involve left space and time first derivatives, with the left space derivative required to have locally bounded 2-dimensional variation. ... More
Huygens-Fresnel wavefront tracing in non-uniform mediaSep 09 2015Jun 12 2016We present preliminary results on a novel numerical method describing wave propagation in non-uniform media. Following Huygens-Fresnel' principle, we model the wavefront as an array of point sources that emit wavelets, which interfere. We then identify ... More
SlowFuzz: Automated Domain-Independent Detection of Algorithmic Complexity VulnerabilitiesAug 28 2017Algorithmic complexity vulnerabilities occur when the worst-case time/space complexity of an application is significantly higher than the respective average case for particular user-controlled inputs. When such conditions are met, an attacker can launch ... More
Testing Alternative Theories of Dark Matter with the CMBMay 28 2008We propose a method to study and constrain modified gravity theories for dark matter using CMB temperature anisotropies and polarization. We assume that the theories considered here have already passed the matter power-spectrum test of large-scale structure. ... More
A Consistent Microlensing Model for the Galactic BarDec 11 1995We compute a microlensing map for the Galactic bar. The predicted event rate and event duration distribution are consistent with the $55$ events recently reported by the MACHO and OGLE collaborations. Most of the events are due to lensing by stars in ... More
Probing Molecular Dynamics at Attosecond Resolution with Femtosecond Laser PulsesJul 17 2003The kinetic energy distribution of D$^+$ ions resulting from the interaction of a femtosecond laser pulse with D$_2$ molecules is calculated based on the rescattering model. From analyzing the molecular dynamics, it is shown that the recollision time ... More
Direct ultrashort pulse generation by intracavity nonlinear compressionOct 30 2009Direct generation of ultrashort, transform-limited pulses in a laser resonator is observed theoretically and experimentally. This constitutes a new type of ultrashort pulse generation in mode-locked lasers: in contrast to the well-known solitons (hyperbolic ... More
Bound states of gain-guided solitons in a passively mode-locked fiber laserOct 30 2009We report on the observation of bound states of gain-guided solitons (GGSs) in a dispersion-managed erbium-doped fiber laser operating in the normal net cavity dispersion regime. Despite of the fact that the GGS is a chirped soliton and there is strong ... More
Multiwavelength Passively Mode Locked Fiber Laser: all normal dispersionApr 14 2009May 04 2009We report on the generation of multiwavelength gain-guided soliton (GGS) in an all normal dispersion birefringent fiber laser passively mode-locked with a semiconductor saturable absorber mirror (SESAM). Determined by the cavity birefringence, we observe ... More
Observation of high-order polarization-locked vector solitons in a fiber laserMar 13 2009We report on the experimental observation of a novel type of polarization locked vector soliton in a passively mode-locked fiber laser. The vector soliton is characterized by that not only the two orthogonally polarized soliton components are phase locked, ... More
Averages of shifted convolutions of $d_3(n)$Jan 28 2011Feb 14 2011We investigate the first and second moments of shifted convolutions of the generalised divisor function $d_3(n)$.
Proof of a conjecture of Morales-Pak-Panova on reverse plane partitionsNov 08 2017Using equivariant cohomology theory, Naruse obtained a hook length formula for the number of standard Young tableaux of skew shape $\lambda/\mu$. Morales, Pak and Panova found two $q$-analogues of Naruse's formula respectively by counting semistandard ... More
Feature functional theory - binding predictor (FFT-BP) for the blind prediction of binding free energiesMar 31 2017We present a feature functional theory - binding predictor (FFT-BP) for the protein-ligand binding affinity prediction. The underpinning assumptions of FFT-BP are as follows: i) representability: there exists a microscopic feature vector that can uniquely ... More
Low-temperature heat transport of CuFe$_{1-x}$Ga$_x$O$_2$ ($x =$ 0--0.12) single crystalsMay 30 2017We report a study on the thermal conductivity of CuFe$_{1-x}$Ga$_x$O$_2$ ($x =$ 0--0.12) single crystals at temperatures down to 0.3 K and in magnetic fields up to 14 T. CuFeO$_2$ is a well-known geometrically frustrated triangular lattice antiferromagnet ... More
Thermal conductivity of the diamond-chain compound Cu_3(CO_3)_2(OH)_2Dec 17 2015Thermal conductivity (\kappa) of a distorted spin diamond-chain system, Cu_3(CO_3)_2(OH)_2, is studied at low temperatures down to 0.3 K and in magnetic fields up to 14 T. In zero field, the \kappa(T) curve with heat current along the chain direction ... More
Heat switch effect in an antiferromagnetic insulator Co$_3$V$_2$O$_8$Jun 07 2016We report a heat switch effect in single crystals of an antiferromagnet Co$_3$V$_2$O$_8$, that is, the thermal conductivity ($\kappa$) can be changed with magnetic field in an extremely large scale. Due to successive magnetic phase transitions at 12--6 ... More
A parity-breaking electronic nematic phase transition in the spin-orbit coupled metal Cd$_2$Re$_2$O$_7$Apr 24 2017Strong electron interactions can drive metallic systems toward a variety of well-known symmetry-broken phases, but the instabilities of correlated metals with strong spin-orbit coupling have only recently begun to be explored. We uncovered a multipolar ... More
Radio structure of the blazar 1156+295 with sub-pc resolutionFeb 15 2011Apr 04 20111156+295 is a flat-spectrum quasar which is loud at radio and gamma-ray. Previous observations of the source revealed a radio morphology on pc to kpc scales consistent with a helical jet model. In our present research, this source was observed with the ... More
Magnetically originated phonon-glass-like behavior in Tb_2Ti_2O_7 single crystalMay 29 2013We report a study on the thermal conductivity (\kappa) of Tb_2Ti_2O_7 single crystals at low temperatures. It is found that in zero field this material has an extremely low phonon thermal conductivity in a broad temperature range. The mean free path of ... More
A charge density wave-like instability in a doped spin-orbit-assisted weak Mott insulatorJan 18 2017Layered perovskite iridates realize a rare class of Mott insulators that are predicted to be strongly spin-orbit coupled analogues of the parent state of cuprate high-temperature superconductors. Recent discoveries of pseudogap, magnetic multipolar ordered ... More
LaPtSb: a half-Heusler compound with high thermoelectric performanceJan 28 2016Jun 07 2016The electronic and transport properties of the half-Heusler compound LaPtSb are investigated by performing first-principles calculations combined with semi-classical Boltzmann theory and deformation potential theory. Compared with many typical half-Heusler ... More
Turbulence Model Development using CFD-Driven Machine LearningFeb 25 2019This paper presents a novel CFD-driven machine learning framework to develop Reynolds-averaged Navier-Stokes (RANS) models. For the CFD-driven training, the gene expression programming (GEP) method (Weatheritt & Sandberg, J. Comput. Phys., 325, 22-37 ... More
Three Mode Interactions as a Precision Monitoring Tool for Advanced Laser InterferometersFeb 20 2014Three-mode opto-acoustic interactions in advanced laser interferometer gravitational wave detectors have high sensitivity to thermally excited ultrasonic modes in their test masses. Three mode interaction signal gain can change by 100% for thermally induced ... More
Congruences for the Coefficients of the Powers of the Euler ProductFeb 05 2018Mar 13 2018Let $p_k(n)$ be given by the $k$-th power of the Euler Product $\prod _{n=1}^{\infty}(1-q^n)^k=\sum_{n=0}^{\infty}p_k(n)q^{n}$. By investigating the properties of the modular equations of the second and the third order under the Atkin $U$-operator, we ... More
Neutron Scattering Measurements of Spatially Anisotropic Magnetic Exchange Interactions in Semiconducting K0.85Fe1.54Se2 (TN=280 K)May 19 2014We use neutron scattering to study the spin excitations associated with the stripe antiferromagnetic (AFM) order in semiconducting K$_{0.85}$Fe$_{1.54}$Se$_2$ ($T_N$=$280$ K). We show that the spin wave spectra can be accurately described by an effective ... More
Robust paths to realize nonadiabatic holonomic gatesMay 23 2017To realize one desired nonadiabatic holonomic gate, various equivalent evolution paths can be chosen. However, in the presence of errors, these paths become inequivalent. In this paper, we investigate the difference of these evolution paths in the presence ... More
Properties of Short-wavelength Oblique Alfven and Slow WavesMay 04 2014Sep 13 2014Linear properties of kinetic Alfv\'{e}n waves (KAWs) and kinetic slow waves (KSWs) are studied in the framework of two-fluid magnetohydrodynamics. We obtain the wave dispersion relations that are valid in a wide range of the wave frequency $\omega $ and ... More
Electron Cyclotron Maser Emissions from Evolving Fast Electron BeamsMar 14 2016Fast electron beams (FEBs) are common products of solar active phenomena. Solar radio bursts are an important diagnostic tool in the understanding of FEBs as well as the solar plasma environment in which they are propagating along solar magnetic fields. ... More
Tensor Networks for Dimensionality Reduction and Large-Scale Optimizations. Part 2 Applications and Future PerspectivesAug 30 2017Part 2 of this monograph builds on the introduction to tensor networks and their operations presented in Part 1. It focuses on tensor network models for super-compressed higher-order representation of data/parameters and related cost functions, while ... More
Spontaneous Decoherence of Coupled Harmonic Oscillators Confined in A RingSep 30 2016We study the spontaneous decoherence of the coupled harmonic oscillators confined in a ring container, where the nearest-neighbor harmonic potentials are taken into consideration. Without any external symmetry breaking field or surrounding environment, ... More
Description of Brownian motion including both kinetic and hydrodynamic effectsDec 02 2017Feb 12 2018It is known that a full description of Brownian motion in the entire course of time should incorporate both kinetic and hydrodynamic effects, but a formula accounts for both effects has been established only in three dimension and only for the limiting ... More
Determination of Dark Energy by the Einstein Telescope: Comparing with CMB, BAO and SNIa ObservationsSep 01 2010Jan 11 2011A design study is currently in progress for a third generation gravitational-wave (GW) detector called Einstein Telescope (ET). An important kind of source for ET will be the inspiral and merger of binary neutron stars (BNS) up to $z \sim 2$. If BNS mergers ... More
Terahertz Saturable Absorption in Superconducting MetamaterialsJan 11 2016Jan 12 2016We present a superconducting metamaterial saturable absorber at terahertz frequencies. The absorber consists of an array of split ring resonators (SRRs) etched from a 100nm YBaCu3O7 (YBCO) film. A polyimide spacer layer and gold ground plane are deposited ... More
Generalized parton distributions in a light-front nonperturbative approachMar 04 2014Basis Light-front Quantization (BLFQ) has recently been developed as a promising nonperturbative technique. Using BLFQ, we investigate the Generalized Parton Distributions (GPDs) in a nonperturbative framework for a dressed electron in QED. We evaluate ... More
Joint Models for Time-to-Event Data and Longitudinal Biomarkers of High DimensionSep 10 2016Sep 26 2016Joint models for longitudinal biomarkers and time-to-event data are widely used in longitudinal studies. Many joint modeling approaches have been proposed to deal with different types of longitudinal biomarkers and survival outcomes. However, most existing ... More
Distance-Correlation based Gene Set Analysis in Longitudinal StudiesSep 10 2016Sep 26 2016Longitudinal gene expression profiles of patients are collected in some clinical studies to monitor disease progression and understand disease etiology. The identification of gene sets that have coordinated changes with relevant clinical outcomes over ... More
Improved model for the thermal conductivity of binary metallic systemsJun 29 2016Sep 30 2016We extended and corrected Mott's two-band model for the composition-dependence of thermal and electrical conductivity in binary metal alloys based on high-throughput time-domain thermoreflectance (TDTR) measurements on diffusion multiples and scatterer-density ... More
Time-dependent occurrence rate of electromagnetic cyclotron waves in the solar wind: evidence for effect of alpha particles?Sep 04 2017Previous studies revealed that electromagnetic cyclotron waves (ECWs) near the proton cyclotron frequency exist widely in the solar wind, and the majority of ECWs are left-handed (LH) polarized waves. Using the magnetic field data from the STEREO mission, ... More
Induced solitons formed by cross polarization coupling in a birefringent cavity fiber laserOct 30 2009We report on the experimental observation of induced solitons in a passively mode-locked fiber ring laser with birefringence cavity. Due to the cross coupling between the two orthogonal polarization components of the laser, it was found that if a soliton ... More
Electrical Control of Structural and Physical Properties via Strong Spin-Orbit Interactions in Sr2IrO4Nov 27 2017Electrical control of structural and physical properties is a long-sought, but elusive goal of contemporary science and technology. We demonstrate that a combination of strong spin-orbit interactions (SOI) and a canted antiferromagnetic (AFM) Mott state ... More
Investigations of surface quality and SRF cavity performanceJun 27 2012Magnetic field enhancement has been studied in the past through replica and cavity cutting. Considerable progress of niobium cavity manufacturing and processing has been made since then. Wide variety of single cell cavities has been analyzed through replica ... More
Non-adiabatic Holonomic Gates realized by a single-shot implementationNov 03 2015Non-adiabatic holonomic quantum computation has received increasing attention due to its robustness against control errors. However, all the previous schemes have to use at least two sequentially implemented gates to realize a general one-qubit gate. ... More
Magnetism study on a frustration-free spatially anisotropic $S$ = 1 square lattice antiferromagnet Ni[SC(NH$_2$)$_2$]$_6$Br$_2$Mar 06 2019Magnetism of the $S$ = 1 Heisenberg antiferromagnets on the spatially anisotropic square lattice has been scarcely explored. Here we report a study of the magnetism, specific heat, and thermal conductivity on Ni[SC(NH$_2$)$_2$]$_6$Br$_2$ (DHN) single ... More
Interferometric Measurements of Variable 340 GHz Linear Polarization in Sagittarius A*Nov 22 2005Using the Submillimeter Array, we have made the first high angular resolution measurements of the linear polarization of Sagittarius A* at submillimeter wavelengths, and the first detection of intra-day variability in its linear polarization. We detected ... More
The High-Density Ionized Gas in the Central Parsecs of the GalaxyFeb 25 2010We report the results from observations of H30$\alpha$ line emission in Sgr A West with the Submillimeter Array at a resolution of 2\arcsec and a field of view of about 40\arcsec. The H30$\alpha$ line is sensitive to the high-density ionized gas in the ... More
Ground-based detections of thermal emission from CoRoT-1b and WASP-12bSep 23 2011We report a new detection of the H-band thermal emission of CoRoT-1b and two confirmation detections of the Ks-band thermal emission of WASP-12b at secondary eclipses. The H-band measurement of CoRoT-1b shows an eclipse depth of 0.145%\pm0.049% with a ... More
Parametric instabilities and their control in advanced interferometer GW detectorsFeb 18 2005A detailed simulation of Advanced LIGO test mass optical cavities shows that parametric instabilities will excite acoustic modes in the test masses in the frequency range 28-35 kHz and 64-72 kHz. Using nominal Advanced LIGO optical cavity parameters with ... More
New membership determination and proper motions of NGC 1817. Parametric and non-parametric approachJul 21 2004We have calculated proper motions and re-evaluated the membership probabilities of 810 stars in the area of two NGC objects, NGC 1817 and NGC 1807. We have obtained absolute proper motions from 25 plates in the reference system of the Tycho-2 Catalogue. ... More
Semi-Supervised linear regressionDec 07 2016Sep 16 2018We study a regression problem where for some part of the data we observe both the label variable ($Y$) and the predictors (${\bf X}$), while for other part of the data only the predictors are given. Such a problem arises, for example, when observations ... More
Superconducting properties of under- and over-doped Ba$_{x}$K$_{1-x}$BiO$_{3}$ perovskite oxideFeb 09 2018May 29 2018In the present study, we investigate the thermodynamic properties of the Ba$_{x}$K$_{1-x}$BiO$_{3}$ (BKBO) superconductor in the under- ($x=0.5$) and over-doped ($x=0.7$) regime, within the framework of the Migdal-Eliashberg formalism. The analysis is ... More
Enhanced Magnetic Anisotropy of Mn12-acetateJun 15 2005Thin films of the Single Molecule Magnet (Mn12-acetate) have been fabricated on a Si-substrate by the Dip-and-Dry method, a simple and robust technique. Atomic force microscopy and X-ray photoelectron spectroscopy characterizations reveal that homogeneous, ... More
Films of Mn12-acetate by Pulsed Laser EvaporationSep 02 2004Films of the molecular nanomagnet, Mn12-acetate, have been deposited using pulsed laser deposition and a novel variant, matrix assisted pulsed laser evaporation. The films have been characterized by X-ray photoelectron spectroscopy, mass spectrometry ... More
Optimal Water-Power Flow Problem: Formulation and Distributed Optimal SolutionAug 22 2017Nov 08 2017This paper formalizes an optimal water-power flow (OWPF) problem to optimize the use of controllable assets across power and water systems while accounting for the couplings between the two infrastructures. Tanks and pumps are optimally managed to satisfy ... More
Structural and magnetic properties of the 5$d^2$ double perovskites Sr$_2 B$ReO$_6$ ($B$ $=$ Y, In)Feb 09 2016We have performed magnetic susceptibility, heat capacity, neutron powder diffraction, and muon spin relaxation experiments to investigate the magnetic ground states of the 5$d^2$ double perovskites Sr$_2$YReO$_6$ and Sr$_2$InReO$_6$. We find that Sr$_2$YReO$_6$ ... More
Low-Rank Tensor Networks for Dimensionality Reduction and Large-Scale Optimization Problems: Perspectives and Challenges PART 1Sep 04 2016Sep 11 2017Machine learning and data mining algorithms are becoming increasingly important in analyzing large volume, multi-relational and multi--modal datasets, which are often conveniently represented as multiway arrays or tensors. It is therefore timely and valuable ... More
Composite nonadiabatic holonomic quantum computationJun 04 2017Nonadiabatic holonomic quantum computation has robust feature in suppressing control errors because of its holonomic feature. However, this kind of robust feature is challenged since the usual way of realizing nonadiabatic holonomic gates introduces errors ... More
Accurate universal models for the mass accretion histories and concentrations of dark matter halosNov 05 2008Nov 30 2009A large amount of observations have constrained cosmological parameters and the initial density fluctuation spectrum to a very high accuracy. However, cosmological parameters change with time and the power index of the power spectrum varies with mass ... More
The non-linear evolution of bispectrum from the scale-free N-body simulationJul 29 2004Jan 25 2005We have accurately measured the bispectrum for four scale-free models of structure formation with the spectral index $n=1$, 0, -1, and -2. The measurement is based on a new method that can effectively eliminate the alias and numerical artifacts, and reliably ... More
Vector dark domain wall solitons in a fiber ring laserOct 15 2009We observe a novel type of vector dark soliton in a fiber ring laser. The vector dark soliton consists of stable localized structures separating the two orthogonal linear polarization eigenstates of the laser emission and is visible only when the total ... More
A Dirichlet Process Mixture Model for Clustering Longitudinal Gene Expression DataSep 10 2016Sep 26 2016Subgroup identification (clustering) is an important problem in biomedical research. Gene expression profiles are commonly utilized to define subgroups. Longitudinal gene expression profiles might provide additional information on disease progression ... More
Engineering the breaking of time-reversal symmetry in gate-tunable hybrid ferromagnet/topological insulator heterostructuresJun 14 2017Studying the influence of breaking time-reversal symmetry on topological insulator surface states is an important problem of current interest in condensed matter physics and could provide a route toward proof-of-concept spintronic devices that exploit ... More
On the Construction of Integrable Gaudin Models with BoundariesMay 17 2001May 21 2001We propose a general method for constructing boundary integrable Gaudin models associated with (twisted) affine algebras ${\cal G}^{(k)} (k=1, 2)$, where ${\cal G}$ is a simple Lie algebra or superalgebra. Many new integrable Gaudin models with boundaries ... More
The effect of electron holes on cyclotron maser emission driven by horseshoe distributionsNov 07 2016This Brief Communication presents a quantitative investigation for the effect of electron holes on electron-cyclotron maser (ECM) driven by horseshoe distributions. The investigation is based on an integrated distribution function for the horseshoe distributions ... More
3D analysis of spatial resolution of MIRO/Rosetta measurements at 67P/CGMar 04 2019The MIRO instrument's remote sensing capability is integral in constraining water density, temperature and velocity fields in the coma of 67P/Churyumov-Gersimenko. Our aim is to quantify the contribution to the water density from all facets inside and ... More