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Triangulated quotient categoriesApr 10 2012A notion of mutation of subcategories in a right triangulated category is defined in this paper. When (Z,Z) is a D-mutation pair in a right triangulated category C, the quotient category Z/D carries naturally a right triangulated structure. More-over, ... More

Cluster algebras arising from cluster tubesAug 20 2010Nov 29 2013We study the cluster algebras arising from cluster tubes with rank bigger than $1$. Cluster tubes are $2-$Calabi-Yau triangulated categories which contain no cluster tilting objects, but maximal rigid objects. Fix a certain maximal rigid object $T$ in ... More

Number of paths versus number of basis functions in American option pricingMar 24 2005An American option grants the holder the right to select the time at which to exercise the option, so pricing an American option entails solving an optimal stopping problem. Difficulties in applying standard numerical methods to complex pricing problems ... More

Maximal rigid subcategories in 2-Calabi-Yau triangulated categoriesApr 30 2010May 11 2010We study the maximal rigid subcategories in $2-$CY triangulated categories and their endomorphism algebras. Cluster tilting subcategories are obviously maximal rigid; we prove that the converse is true if the $2-$CY triangulated categories admit a cluster ... More

Boosting with early stopping: Convergence and consistencyAug 16 2005Boosting is one of the most significant advances in machine learning for classification and regression. In its original and computationally flexible version, boosting seeks to minimize empirically a loss function in a greedy fashion. The resulting estimator ... More

The geometric realization of regular path complexes via (co-)homologyAug 16 2018The aim of this paper is to give the geometric realization of regular path complexes via (co-)homology groups with coefficients in a ring $R$. Concretely, for each regular path complex $P$, we associate it with a $\Delta$-complex $S(P)$ and show that ... More

Cotorsion pairs and t-structures in a $2-$Calabi-Yau triangulated categoryOct 24 2012Oct 26 2012For a Calabi-Yau triangulated category $\mathcal{C}$ of Calabi-Yau dimension $d$ with a $d-$cluster tilting subcategory $\mathcal{T}$, it is proved that the decomposition of $\mathcal{C}$ is determined by the special decomposition of $\mathcal{T}$, namely, ... More

Mutation of torsion pairs in triangulated categories and its geometric realizationMay 18 2011Jun 30 2017We introduce and study mutation of torsion pairs, as a generalization of mutation of cluster tilting objects, rigid objects and maximal rigid objects. It is proved that any mutation of a torsion pair is again a torsion pair. A geometric realization of ... More

Genus two Smale-Williams solenoids in 3-manifoldsOct 16 2006Aug 04 2009Using alternating Heegaard diagrams, we construct some 3-manifolds which admit diffeomorphisms such that the non-wandering sets of the diffeomorphisms are composed of Smale-Williams solenoid attractors and repellers, an interesting example is the truncated-cube ... More

Cluster combinatorics of d-cluster categoriesDec 10 2007Feb 14 2009We study the cluster combinatorics of $d-$cluster tilting objects in $d-$cluster categories. By using mutations of maximal rigid objects in $d-$cluster categories which are defined similarly for $d-$cluster tilting objects, we prove the equivalences between ... More

Possible Detection of Subsecond-period Propagating Magnetohydrodynamics Waves in Post-reconnection Magnetic Loops during a Two-ribbon Solar FlareJan 16 2019Feb 04 2019Solar flares involve the sudden release of magnetic energy in the solar corona. Accelerated nonthermal electrons have often been invoked as the primary means for transporting the bulk of the released energy to the lower solar atmosphere. However, significant ... More

Formulas for Counting the Sizes of Markov Equivalence Classes of Directed Acyclic GraphsOct 23 2016The sizes of Markov equivalence classes of directed acyclic graphs play important roles in measuring the uncertainty and complexity in causal learning. A Markov equivalence class can be represented by an essential graph and its undirected subgraphs determine ... More

Structural Compression of Convolutional Neural Networks Based on Greedy Filter PruningMay 20 2017Jul 21 2017Convolutional neural networks (CNNs) have state-of-the-art performance on many problems in machine vision. However, networks with superior performance often have millions of weights so that it is difficult or impossible to use CNNs on computationally ... More

Note on Bulk Reconstruction in AdS$_3$/WCFT$_2$May 12 2019The bulk reconstructions in AdS/CFT and its cousins are essential to understand the holographic nature of quantum gravity. In this work, we try to study the bulk reconstruction in the AdS$_3$/WCFT$_2$ correspondence. After deriving the bulk-boundary propagator, ... More

A time series model of CDS sequences in complete genomeJun 30 2000A time series model of CDS sequences in complete genome is proposed. A map of DNA sequence to integer sequence is given. The correlation dimensions and Hurst exponents of CDS sequences in complete genome of bacteria are calculated. Using the average of ... More

Superheat: An R package for creating beautiful and extendable heatmaps for visualizing complex dataDec 04 2015Jan 26 2017The technological advancements of the modern era have enabled the collection of huge amounts of data in science and beyond. Extracting useful information from such massive datasets is an ongoing challenge as traditional data visualization tools typically ... More

Sunrise or Sunset: Selective Comparison Learning for Subtle Attribute RecognitionJul 20 2017The difficulty of image recognition has gradually increased from general category recognition to fine-grained recognition and to the recognition of some subtle attributes such as temperature and geolocation. In this paper, we try to focus on the classification ... More

Adaptive Feeding: Achieving Fast and Accurate Detections by Adaptively Combining Object DetectorsJul 20 2017Object detection aims at high speed and accuracy simultaneously. However, fast models are usually less accurate, while accurate models cannot satisfy our need for speed. A fast model can be 10 times faster but 50\% less accurate than an accurate model. ... More

Second Repeating FRB 180814.J0422+73: Ten-year Fermi-LAT Upper limits and ImplicationsMar 18 2019Mar 19 2019The second repeating fast radio burst source, FRB 180814.J0422+73, was detected recently by the CHIME collaboration. We use the ten-year Fermi Large Area Telescope (LAT) archival data to place a flux upper limit in the energy range of 100 MeV$-$10 GeV ... More

Cotorsion pairs in the cluster category of a marked surfaceMay 07 2012We study extension spaces, cotorsion pairs and their mutations in the cluster category of a marked surface without punctures. Under the one-to-one correspondence between the curves, valued closed curves in the marked surface and the indecomposable objects ... More

Cotorsion pairs in cluster categories of type $A_{\infty}^{\infty}$Apr 13 2017May 29 2017In this paper, we give a complete classification of cotorsion pairs in a cluster category $\mathscr{C}$ of type $A^\infty_\infty$ via certain configurations of arcs, called $\tau$-compact Ptolemy diagrams, in an infinite strip with marked points. As applications, ... More

Extracting work from the magnetic field coupled Brownian particlesJul 04 2014Aug 09 2014Thermodynamics of the magnetic field coupled Brownian particles is studied. We show that in the presence of the magnetic field, work can be extracted from the reservoir even when the measurement operation and the potential change operation are applied ... More

Characterizing isolated singularities of conformal hyperbolic metricsJun 18 2019Jul 01 2019We find the explicit local models of isolated singularities of conformal hyperbolic metrics by Complex Analysis, which is interesting in its own and could potentially be extended to high-dimensional case.

A nonlinear PDE-based method for sparse deconvolutionApr 01 2011In this paper, we introduce a new nonlinear evolution partial differential equation for sparse deconvolution problems. The proposed PDE has the form of continuity equation that arises in various research areas, e.g. fluid dynamics and optimal transportation, ... More

Asymptotic distribution and sparsistency for l1-penalized parametric M-estimators with applications to linear SVM and logistic regressionAug 13 2009Since its early use in least squares regression problems, the l1-penalization framework for variable selection has been employed in conjunction with a wide range of loss functions encompassing regression, classification and survival analysis. While a ... More

Supplement to "Reversible MCMC on Markov equivalence classes of sparse directed acyclic graphs"Mar 04 2013Aug 10 2013This supplementary material includes three parts: some preliminary results, four examples, an experiment, three new algorithms, and all proofs of the results in the paper "Reversible MCMC on Markov equivalence classes of sparse directed acyclic graphs". ... More

Feedback Coding Schemes for the Broadcast Channel with Mutual Secrecy RequirementApr 10 2018Recently, the physical layer security (PLS) of the communication systems has been shown to be enhanced by using legal receiver's feedback. The present secret key based feedback scheme mainly focuses on producing key from the feedback and using this key ... More

Temperature-dependent Casimir-Polder forces on polarizable moleculesNov 03 2012Nov 19 2012We demonstrate that the thermal Casimir-Polder forces on molecules near a conducting surface whose transition wavelengths are comparable to the molecule-surface separation are dependent on the ambient temperature and molecular polarization and they can ... More

Statistical guarantees for the EM algorithm: From population to sample-based analysisAug 09 2014We develop a general framework for proving rigorous guarantees on the performance of the EM algorithm and a variant known as gradient EM. Our analysis is divided into two parts: a treatment of these algorithms at the population level (in the limit of ... More

Hierarchical interpretations for neural network predictionsJun 14 2018Jan 16 2019Deep neural networks (DNNs) have achieved impressive predictive performance due to their ability to learn complex, non-linear relationships between variables. However, the inability to effectively visualize these relationships has led to DNNs being characterized ... More

Relay Broadcast Channel with Confidential MessagesDec 24 2013Dec 08 2015We investigate the effects of an additional relay node on the secrecy of broadcast channels by considering the model of relay broadcast channels with confidential messages. We show that this additional relay node can increase the achievable secrecy rate ... More

Reversible MCMC on Markov equivalence classes of sparse directed acyclic graphsSep 26 2012Jan 27 2014Graphical models are popular statistical tools which are used to represent dependent or causal complex systems. Statistically equivalent causal or directed graphical models are said to belong to a Markov equivalent class. It is of great interest to describe ... More

Spectral clustering and the high-dimensional stochastic blockmodelJul 09 2010Dec 13 2011Networks or graphs can easily represent a diverse set of data sources that are characterized by interacting units or actors. Social networks, representing people who communicate with each other, are one example. Communities or clusters of highly connected ... More

Effective Mass of Composite Fermions and Fermionic Chern-Simons Theory in Temporal GaugeSep 08 1997Sep 18 1997The definitions of the effective mass of the composite fermion are discussed for the half-filled Landau level problem. In a recent work, Shankar and Murthy show a finite effective mass of the composite fermion by a canonical transformation while the perturbative ... More

The composite absolute penalties family for grouped and hierarchical variable selectionSep 02 2009Extracting useful information from high-dimensional data is an important focus of today's statistical research and practice. Penalized loss function minimization has been shown to be effective for this task both theoretically and empirically. With the ... More

Asymptotic theory for the semiparametric accelerated failure time model with missing dataAug 21 2009We consider a class of doubly weighted rank-based estimating methods for the transformation (or accelerated failure time) model with missing data as arise, for example, in case-cohort studies. The weights considered may not be predictable as required ... More

Sequential online prediction in the presence of outliers and change points: an instant temporal structure learning approachJul 15 2019In this paper, we consider sequential online prediction (SOP) for streaming data in the presence of outliers and change points. We propose an INstant TEmporal structure Learning (INTEL) algorithm to address this problem.Our INTEL algorithm is developed ... More

Randomized Algorithms For High Quality Treatment Planning in Volumetric Modulated Arc TherapyDec 07 2015Jan 05 2016In recent years, volumetric modulated arc therapy (VMAT) has been becoming a more and more important radiation technique widely used in clinical application for cancer treatment. One of the key problems in VMAT is treatment plan optimization, which is ... More

Isolated singularities of conformal hyperbolic metricsNov 03 2017Sep 11 2018J. Nitsche proved that an isolated singularity of a conformal hyperbolic metric is either a conical singularity or a cusp one. We prove by developing map that there exists a complex coordinate $z$ centered at the singularity where the metric has the expression ... More

Brane worlds in gravity with auxiliary fieldsMay 01 2014Mar 11 2015Recently, Pani, Sotiriou, and Vernieri explored a new theory of gravity by adding nondynamical fields, i.e., gravity with auxiliary fields [Phys. Rev. D 88, 121502(R) (2013)]. In this gravity theory, higher-order derivatives of matter fields generically ... More

The Fermi surface of underdoped high-T_c superconducting cupratesFeb 24 1997May 06 1997The coexistence of $\pi$-flux state and d-wave RVB state is considered in this paper within the slave boson approach. A critical value of doping concentration $\delta_c$ is found, below which the coexisting $\pi$-flux and d-wave RVB state is favored in ... More

Isomorphisms between quantum groups $U_q(\mathfrak{sl}_{n+1})$ and $U_p(\mathfrak{sl}_{n+1})$Jan 01 2010Feb 22 2012Let $\mathbb K$ be a field and suppose $p, q\in\mathbb K^*$ are not roots of unity. We prove that the two quantum groups $U_q(\mathfrak {sl}_{n+1})$ and $U_p(\mathfrak{sl}_{n+1})$ are isomorphic as $\mathbb K$-algebras implies that $p=\pm q^{\pm 1}$ when ... More

Isomorphisms and automorphisms of quantum groupsOct 09 2009Feb 22 2012We consider isomorphisms and automorphisms of quantum groups. Let $k$ be a field and suppose $p, q\in k^*$ are not roots of unity. We prove that the two quantum groups $U_q(\mathfrak {sl}_2)$ and $U_p(\mathfrak{sl}_2)$ over a field $k$ are isomorphic ... More

Tensor perturbations of Palatini $f(\mathcal{R})$-branesNov 12 2014Apr 26 2015We investigate the thick brane model in Palatini $f(\mathcal{R})$ gravity. The brane is generated by a real scalar field with a scalar potential. We solve the system analytically and obtain a series of thick brane solutions for the $f(\mathcal{R})=\mathcal{R}+\alpha ... More

Local Electrical Stress-Induced Doping and Formation of 2D Monolayer Graphene P-N JunctionMar 23 2011May 24 2011We demonstrated doping in 2D monolayer graphene via local electrical stressing. The doping, confirmed by the resistance-voltage transfer characteristics of the graphene system, is observed to continuously tunable from N-type to P-type as the electrical ... More

A Debiased MDI Feature Importance Measure for Random ForestsJun 26 2019Tree ensembles such as Random Forests have achieved impressive empirical success across a wide variety of applications. To understand how these models make predictions, people routinely turn to feature importance measures calculated from tree ensembles. ... More

Non-Fermi liquid behavior in an extended Anderson modelAug 27 1996An extended Anderson model, including screening channels (non-hybridizing, but interacting with the local orbit), is studied within the Anderson-Yuval approach, originally devised for the single-channel Kondo problem. By comparing the perturbation expansions ... More

Chemical Vapor Deposition-Assembled Graphene Field-Effect Transistor on Hexagonal Boron NitrideMay 08 2011Jun 07 2011We investigate key electrical properties of monolayer graphene assembled by chemical-vapor-deposition (CVD) as impacted by supporting substrate material. Graphene field-effect transistors (GFETs) were fabricated with carbon channel placing directly on ... More

Schwinger boson mean field theory of the Heisenberg Ferrimagnetic Spin ChainApr 21 1999Apr 22 1999The Schwinger boson mean field theory is applied to the quantum ferrimagnetic Heisenberg chain. There is a ferrimagnetic long range order in the ground state. We observe two branches of the low lying excitation and calculate the spin reduction, the gap ... More

Exploit Bounding Box Annotations for Multi-label Object RecognitionApr 22 2015Jun 03 2016Convolutional neural networks (CNNs) have shown great performance as general feature representations for object recognition applications. However, for multi-label images that contain multiple objects from different categories, scales and locations, global ... More

Building a comprehensive syntactic and semantic corpus of Chinese clinical textsNov 07 2016Nov 08 2016Objective: To build a comprehensive corpus covering syntactic and semantic annotations of Chinese clinical texts with corresponding annotation guidelines and methods as well as to develop tools trained on the annotated corpus, which supplies baselines ... More

Dynamics of a single hole in the Heisenberg-Kitaev model: a self-consistent Born approximation studyApr 01 2018The magnetic properties of 4d and 5d transition-metal insulating compounds with the honeycomb structure are believed to be described by the Heisenberg-Kitaev model, which contains both the isotropic Heisenberg interaction J and anisotropic Kitaev interaction ... More

Depth $0$ Nonsingular Morse Smale flows on $S^3$Nov 26 2013Apr 07 2014In this paper, we first develope the concept of Lyapunov graph to weighted Lyapunov graph (abbreviated as WLG) for nonsingular Morse-Smale flows (abbreviated as NMS flows) on $S^3$. WLG is quite sensitive to NMS flows on $S^3$. For instance, WLG detect ... More

Comment: Monitoring Networked Applications With Incremental Quantile EstimationAug 02 2007Comment: Monitoring Networked Applications With Incremental Quantile Estimation [arXiv:0708.0302]

The r-mode instability windows of strange starsOct 13 2018Feb 19 2019With the constraint from gravitational wave emission of a binary merger system (GW170817) and two-solar-mass pulsar observations, we investigate the r-mode instability windows of strange stars with unpaired and color-flavor-locked phase strange quark ... More

Fast MCMC sampling algorithms on polytopesOct 23 2017Mar 06 2019We propose and analyze two new MCMC sampling algorithms, the Vaidya walk and the John walk, for generating samples from the uniform distribution over a polytope. Both random walks are sampling algorithms derived from interior point methods. The former ... More

The Haldane Energy Gap of A Doped Linear-Chain Heisenberg AntiferromagnetJan 27 1993Jan 28 1993Using the valence-bond-solid (VBS) approach and the Schwinger boson mean field approximation, we study the dependence of the Haldane gap of a spin-1 linear chain Heisenberg antiferromagnet on impurity doping with different spins. The impurity spins affect ... More

Insulator-to-metal phase transition in Yb-based Kondo insulatorsApr 22 2010The periodic Anderson lattice model for the crystalline electric field (CEF)split 4f quartet states is used to describe the Yb-based Kondo insulators/semiconductors. In the slave-boson mean-field approximation, we derive the hybridized quasiparticle bands, ... More

A Novel Scattered Pilot Design for FBMC/OQAM SystemsSep 29 2015Filter bank multi-carrier with offset quadrature amplitude modulation (FBMC/OQAM) has been heavily studied as an alternative waveform for 5G systems. Its advantages of higher spectrum efficiency, localized frequency response and insensitivity to synchronization ... More

$U(1)\times SU(2)$ gauge theory of underdoped cuprate superconductorsSep 09 1997The $U(1)\times SU(2)$ Chern-Simons gauge theory is applied to study the 2-D $t-J$ model describing the normal state of underdoped cuprate superconductors. The U(1) field produces a flux phase for holons converting them into Dirac-like fermions, while ... More

Semi-supervised learning in unbalanced and heterogeneous networksJan 07 2019Community detection was a hot topic on network analysis, where the main aim is to perform unsupervised learning or clustering in networks. Recently, semi-supervised learning has received increasing attention among researchers. In this paper, we propose ... More

Disentangled Attribution Curves for Interpreting Random Forests and Boosted TreesMay 18 2019Tree ensembles, such as random forests and AdaBoost, are ubiquitous machine learning models known for achieving strong predictive performance across a wide variety of domains. However, this strong performance comes at the cost of interpretability (i.e. ... More

Strong cosmic censorship for the massless charged scalar field in the Reissner-Nordstrom-de Sitter spacetimeAug 10 2018Dec 08 2018It has recently been shown that the strong cosmic censorship conjecture can be violated by the massless neutral scalar field in the nearly extremal Reissner-Nordstrom-de Sitter black hole. However, the formation of such a black hole by gravitational collapse ... More

Holographic RG flow of thermo-electric transports with momentum dissipationJun 02 2017Apr 08 2018We construct the holographic renormalization group (RG) flow of thermo-electric conductivities when the translational symmetry is broken. The RG flow is probed by the intrinsic observers hovering on the sliding radial membranes. We obtain the RG flow ... More

Fast mixing of Metropolized Hamiltonian Monte Carlo: Benefits of multi-step gradientsMay 29 2019Hamiltonian Monte Carlo (HMC) is a state-of-the-art Markov chain Monte Carlo sampling algorithm for drawing samples from smooth probability densities over continuous spaces. We study the variant most widely used in practice, Metropolized HMC with the ... More

Regular level sets of Lyapunov graphs of nonsingular Smale flows on 3-manifoldsJul 20 2010In this paper, we first discuss the regular level set of a nonsingular Smale flow (NSF) on a 3-manifold. The main result about this topic is that a 3-manifold $M$ admits an NSF flow which has a regular level set homeomorphic to $(n+1)T^{2}$ $(n\in \mathbb{Z}, ... More

Remembering LeoJan 05 2011I do not remember when was the first time that I met Leo, but I have a clear memory of going to Leo's office on the 4th floor of Evans Hall to talk to him in my second year in Berkeley's Ph.D. program in 1986. The details of the conversation are not retained ... More

Paired Hall States versus Unidirectional CDW in Tilted Field for $ν={5/2}$Sep 14 1999Dec 17 2000We formulate the composite fermions in the presence of an in-plane magnetic field. As the in-plane field increases, if we assume the state at $\nu=5/2$ turns into the mixed state between the unidirectional charge density wave domains and paired Hall state, ... More

Hierarchical Additive Modeling of Nonlinear Association with Spatial Correlations-An Application to Relate Alcohol Outlet Density and Neighborhood Assault RatesFeb 04 2008Previous studies have suggested a link between alcohol outlets and assaultive violence. In this paper, we explore the effects of alcohol availability on assault crimes at the census tract level over time. The statistical analysis is challenged by several ... More

The remaining parts for the long-standing J/psi polarization puzzleOct 21 2018Based on the non-relativistic quantum chromodynamics factorization formalism, the polarization parameters $\lambda_{\theta\phi}$ and $\lambda_{\phi}$ of $J/\psi$ hadroproduction are analyzed in helicity frame and calculated at QCD next-to-leading order ... More

An Updated Study for $Υ$ Production and Polarization at the Tevatron and LHCMar 29 2015Following the nonrelativistic QCD factorization scheme, by taking latest available measurement on $\chi_b(3P)$ into consideration, we present an updated study on the yield and polarization of $\Upsilon(1S,2S,3S)$ hadroproduction, and the fractions of ... More

Electronic and Structural Properties of C$_{36}$ MoleculeApr 26 2000Apr 27 2000The extended SSH model and Bogoliubov-de Gennes(BdeG) formalism are applied to investigate the electronic properties and stable lattice configurations of C$_{36}$. We focus the problem on the molecule's unusual $D_{6h}$ symmetry. The electronic part of ... More

Holographic Turbulence in Einstein-Gauss-Bonnet Gravity at Large $D$Apr 14 2018We study the holographic hydrodynamics in the Einstein-Gauss-Bonnet(EGB) gravity in the framework of the large $D$ expansion. We find that the large $D$ EGB equations can be interpreted as the hydrodynamic equations describing the conformal fluid. These ... More

2d Galilean Field Theories with Anisotropic ScalingJun 07 2019Jun 19 2019In this work, we study two-dimensional Galilean field theories with global translations and anisotropic scaling symmetries. We show that such theories have enhanced local symmetries, generated by the infinite dimensional spin-l Galilean algebra with possible ... More

The Hierarchy Problem and New Warped Extra DimensionMay 09 2018Oct 10 2018In this paper, we propose a new mechanism with warped extra dimension to solve the hierarchy problem, which is parallel to the Randall-Sundrum (RS) brane scenario. Different from the RS scenario, the fundamental scale is TeV scale and the four-dimensional ... More

Practical scheme for long distance side-channel-free quantum key distribution with weak coherent states onlyJun 05 2018We show that a side-channel-free (SCF) source does not have to be an ideal source by introducing the idea of mapping from ideal source. We propose a 3-state no-touch protocol for quantum key distribution (QKD) where Alice and Bob does not modulate any ... More

Universality class of non-Fermi liquid behavior in mixed valence systemsOct 06 1995Oct 30 1995A generalized Anderson single-impurity model with off-site Coulomb interactions is derived from the extended three-band Hubbard model, originally proposed to describe the physics of the copper-oxides. Using the abelian bosonization technique and canonical ... More

Kondo screening coexisting with ferromagnetic order as a possible ground state for Kondo lattice systemsOct 10 2009Mar 19 2010We consider the competition between the Kondo screening effect and ferromagnetic long-range order (FLRO) within a mean-field theory of the Kondo lattice model for low conduction electron densities $n_{c}$. Depending on the parameter values, several types ... More

Fast Linearized Bregman Iteration for Compressive Sensing and Sparse DenoisingApr 01 2011We propose and analyze an extremely fast, efficient, and simple method for solving the problem:min{parallel to u parallel to(1) : Au = f, u is an element of R-n}.This method was first described in [J. Darbon and S. Osher, preprint, 2007], with more details ... More

The Triality of Conformal Extensions of Three Kinds of Special RelativityNov 04 2006Feb 08 2007The conformal extensions of three kinds of special relativity with ISO(1,3)/SO(1,4)/SO(2,3) invariance on Mink/dS/AdS space, respectively, are realized on an SO(2,4)/Z_2 invariant projective null cone [N] as the (projective) boundary of the 5-d AdS-space. ... More

Three dimensional dust mapping of 12 supernovae remnants in the Galactic anticentreJul 09 2019We present three dimensional (3D) dust mapping of 12 supernova remnants (SNRs) in the Galactic anti-center (Galactic longitude $l$ between 150\degr\ and 210\degr) based on a recent 3D interstellar extinction map. The dust distribution of the regions which ... More

Vorticity and magnetic field production in relativistic ideal fluidsJun 08 2014Jan 26 2015In the framework of relativistic ideal hydrodynamics, we study the production mechanism for vorticity and magnetic field in relativistic ideal fluids. It is demonstrated that in the uncharged fluids the thermal vorticity will always satisfy the Kelvin's ... More

Thermophysical characteristics of the large main-belt asteroid (349) DembowskaAug 10 2017(349) Dembowska, a large, bright main-belt asteroid, has a fast rotation and oblique spin axis. It may have experienced partial melting and differentiation. We constrain Dembowska's thermophysical properties, e.g., thermal inertia, roughness fraction, ... More

Metal-insulator crossover in superconducting cuprates in strong magnetic fieldsFeb 23 2001The metal-insulator crossover of the in-plane resistivity upon temperature decrease, recently observed in several classes of cuprate superconductors, when a strong magnetic field suppresses the superconductivity, is explained using the $U(1)\times SU(2)$ ... More

U(1)xSU(2) Chern--Simons gauge theory of underdoped cuprate superconductorsMay 15 1998The Chern-Simons bosonization with U(1)xSU(2) gauge field is applied to 2-D t-J model in the limit t >> J, to study the normal state properties of underdoped cuprate superconductors. We prove the existence of an upper bound on the partition function for ... More

Geometry of Quantum Computation with QutritsSep 13 2013Determining the quantum circuit complexity of a unitary operation is an important problem in quantum computation. By using the mathematical techniques of Riemannian geometry, we investigate the efficient quantum circuits in quantum computation with $n$ ... More

Bounded Projective Functions and Hyperbolic Metrics with Isolated SingularitiesSep 10 2017Jan 10 2019We establish a correspondence on a Riemann surface between hyperbolic metrics with isolated singularities and bounded projective functions whose Schwarzian derivatives have at most double poles and whose monodromies lie in ${\rm PSU}(1,\,1)$. As an application, ... More

FreeSense:Indoor Human Identification with WiFi SignalsAug 11 2016Human identification plays an important role in human-computer interaction. There have been numerous methods proposed for human identification (e.g., face recognition, gait recognition, fingerprint identification, etc.). While these methods could be very ... More

Relativistic coupled-cluster theory analysis of energies, hyperfine structure constants, and dipole polarizabilities of Cd$^{+}$Feb 08 2018Roles of electron correlation effects in the determination of attachment energies, magnetic dipole hyperfine structure constants and electric dipole (E1) matrix elements of the low-lying states in the singly charged cadmium ion (Cd$^+$) have been analyzed. ... More

Lyapunov graphs of nonsingular Smale flows on $S^{1}\times S^{2}$Mar 11 2011In this paper, following J. Franks' work on Lyapunov graphs of nonsingular Smale flows on $S^3$, we study Lyapunov graphs of nonsingular Smale flows on $S^1 \times S^2$. More precisely, we determine necessary and sufficient conditions on an abstract Lyapunov ... More

2d Galilean Field Theories with Anisotropic ScalingJun 07 2019Jun 12 2019In this work, we study two-dimensional Galilean field theories with global translations and anisotropic scaling symmetries. We show that such theories have enhanced local symmetries, generated by the infinite dimensional spin-l Galilean algebra with possible ... More

Do retinal ganglion cells project natural scenes to their principal subspace and whiten them?Dec 11 2016Several theories of early sensory processing suggest that it whitens sensory stimuli. Here, we test three key predictions of the whitening theory using recordings from 152 ganglion cells in salamander retina responding to natural movies. We confirm the ... More

Encoding-side-channel-free and measurement-device-independent quantum key distributionNov 03 2018We present a simple protocol where Alice and Bob only needs sending out a coherent state or not-sending out a coherent state to Charlie. There is no bases switching. We show that this protocol is both encoding-state-side-channel free to the source part ... More

Sending or not sending: twin-field quantum key distribution with large misalignment errorMay 23 2018Oct 30 2018Based on the novel idea of twin-field quantum key distribution, we present a sending-or-not-sending twin-field fault tolerant quantum key distribution protocol. Our protocol can access a secure distance longer than 700 km even though the misalignment ... More

A Hierarchical Bayesian Approach for Aerosol Retrieval Using MISR DataJul 18 2011Jul 26 2012Atmospheric aerosols can cause serious damage to human health and life expectancy. Using the radiances observed by NASA's Multi-angle Imaging SpectroRadiometer (MISR), the current MISR operational algorithm retrieves Aerosol Optical Depth (AOD) at a spatial ... More

ActiveCrowd: A Framework for Optimized Multi-Task Allocation in Mobile Crowdsensing SystemsAug 08 2016Worker selection is a key issue in Mobile Crowd Sensing (MCS). While previous worker selection approaches mainly focus on selecting a proper subset of workers for a single MCS task, multi-task-oriented worker selection is essential and useful for the ... More

Decoy state method for measurement device independent quantum key distribution with different intensities in only one basisSep 02 2013We show that the three-intensity protocol for measurement device independent quantum key distribution (MDI QKD) can be done with different light intensities in {\em only one} basis. Given the fact that the exact values yields of single-photon pairs in ... More

Multi-level Attention Model for Weakly Supervised Audio ClassificationMar 06 2018In this paper, we propose a multi-level attention model to solve the weakly labelled audio classification problem. The objective of audio classification is to predict the presence or absence of audio events in an audio clip. Recently, Google published ... More

Scalar perturbations of Eddington-inspired Born-Infeld braneworldJun 15 2017Sep 17 2017We consider the scalar perturbations of Eddington-inspired Born-Infeld braneworld models in this paper. The dynamical equation for the physical propagating degree of freedom $\xi(x^\mu,y)$ is achieved by using the Arnowitt-Deser-Misner decomposition method: ... More

Describing the ADD model in a warped geometryJan 12 2015Oct 26 2018We propose a new description of the (4+N)-dimensional Arkani-Hamed-Dimopoulos-Dvali (ADD) model in a (4+1)-dimensional warped geometry to solve the gauge hierarchy problem. It has the same KK spectrum as in the ADD model and recovers its phenomenons that ... More