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Scalable Spectral Algorithms for Community Detection in Directed NetworksNov 29 2012Sep 23 2013Community detection has been one of the central problems in network studies and directed network is particularly challenging due to asymmetry among its links. In this paper, we found that incorporating the direction of links reveals new perspectives on ... More

Observing dipolar confinement-induced resonances in waveguidesSep 19 2013We develop a theoretical framework for the quasi-low-dimensional confinement-induced resonances (CIRs) of particles with the arbitrary three-dimensional two-body interactions, based on the Huang-Yang pseudopotential and the treatment of Feshbach resonances. ... More

Over-the-Air Computation via Intelligent Reflecting SurfacesApr 29 2019Apr 30 2019Over-the-air computation (AirComp) becomes a promising approach for fast wireless data aggregation via exploiting the superposition property in a multiple access channel. To further overcome the unfavorable signal propagation conditions for AirComp, in ... More

An FPGA-based Parallel Architecture for Face Detection using Mixed Color ModelsMay 27 2014In this paper, a reliable method for detecting human faces in color images is proposed. This system firstly detects skin color in YCgCr and YIQ color space, then filters binary texture and the result is morphological processed, finally converts skin tone ... More

Ultrafast molecular dynamics in terahertz-STM experiments: Theoretical analysis using Anderson-Holstein modelApr 01 2019We analyze ultrafast tunneling experiments in which electron transport through a localized orbital is induced by a single cycle THz pulse. We include both electron-electron and electron-phonon interactions on the localized orbital using the Anderson-Holstein ... More

A Positivity-preserving High Order Finite Volume Compact-WENO Scheme for Compressible Euler EquationsFeb 23 2014Jun 24 2014In this paper, a positivity-preserving fifth-order finite volume compact-WENO scheme is proposed for solving compressible Euler equations. As we know conservative compact finite volume schemes have high resolution properties while WENO (Weighted Essentially ... More

Induced magneto-transport properties at palladium/yttrium iron garnet interfaceSep 09 2013As a thin layer of palladium (Pd) is directly deposited on an yttrium iron garnet or YIG (Y3Fe5O12) magnetic insulator film, Pd develops both low- and high-field magneto-transport effects that are absent in standalone Pd or thick Pd on YIG. While the ... More

Large-Scale Beamforming for Massive MIMO via Randomized SketchingMar 14 2019Massive MIMO system yields significant improvements in spectral and energy efficiency for future wireless communication systems. The regularized zero-forcing (RZF) beamforming is able to provide good performance with the capability of achieving numerical ... More

Intra-valley Spin-triplet $p+ip$ Superconducting Pairing in Lightly Doped GrapheneMay 14 2012Jan 01 2013We analyze various possible superconducting pairing states and their relative stabilities in lightly doped graphene. We show that, when inter-sublattice electron-electron attractive interaction dominates and Fermi level is close to Dirac points, the system ... More

Ergodic Theory Over ${\F}_2[[T]]$Mar 15 2011Jun 22 2011In cryptography and coding theory, it is important to study the pseudo-random sequences and the ergodic transformations. We already have the 1-Lipshitz ergodic theory over ${\Z}_2$ established by V. Anashin and others. In this paper we present an ergodic ... More

Transferring a Semantic Representation for Person Re-Identification and SearchJun 12 2017Learning semantic attributes for person re-identification and description-based person search has gained increasing interest due to attributes' great potential as a pose and view-invariant representation. However, existing attribute-centric approaches ... More

A Maximum-Principle-Satisfying High-order Finite Volume Compact WENO Scheme for Scalar Conservation LawsMay 06 2014May 08 2014In this paper, a maximum-principle-satisfying finite volume compact scheme is proposed for solving scalar hyperbolic conservation laws. The scheme combines WENO schemes (Weighted Essentially Non-Oscillatory) with a class of compact schemes under a finite ... More

Berry Curvature and Phonon Hall EffectNov 05 2011Sep 13 2012We establish the general phonon dynamics of magnetic solids by incorporating the Mead-Truhlar correction in the Born-Oppenheimer approximation. The effective magnetic-field acting on the phonons naturally emerges, giving rise to the phonon Hall effect. ... More

Variational Study of Fermionic and Bosonic Systems with Non-Gaussian States: Theory and ApplicationsJul 19 2017We present a new variational method for investigating the ground state and out of equilibrium dynamics of quantum many-body bosonic and fermionic systems. Our approach is based on constructing variational wavefunctions which extend Gaussian states by ... More

Charmonium dissociation in collision with phi meson in hadronic matterJul 10 2016The phi-charmonium dissociation reactions in hadronic matter are studied. Unpolarised cross sections for 12 reactions are calculated in the Born approximation, in the quark-interchange mechanism and with a temperature-dependent quark potential. The potential ... More

Consecutive Detecting Arrays for Interaction FaultsMay 27 2019The concept of detecting arrays was developed to locate and detect interaction faults arising between the factors in a component-based system during software testing. In this paper, we propose a family of consecutive detecting arrays (CDAs) in which the ... More

Weakly Supervised Learning of Objects, Attributes and their AssociationsMar 31 2015When humans describe images they tend to use combinations of nouns and adjectives, corresponding to objects and their associated attributes respectively. To generate such a description automatically, one needs to model objects, attributes and their associations. ... More

Towards Realistic Face Photo-Sketch Synthesis via Composition-Aided GANsDec 04 2017Dec 21 2018Face photo-sketch synthesis aims at generating a facial sketch/photo conditioned on a given photo/sketch. It is of wide applications including digital entertainment and law enforcement. Precisely depicting face photos/sketches remains challenging due ... More

Decoherence problem in quantum state transfer via an engineered spin chainAug 17 2006A perfect quantum state transfer(QST) has been shown in an engineered spin chain with "always-on interaction". Here, we consider a more realistic problem for such a protocol, the quantum decoherence induced by a spatially distributed environment, which ... More

Meson formation in mixed-dimensional t-J modelsJun 12 2018Nov 19 2018Surprising properties of doped Mott insulators are at the heart of many quantum materials, including transition metal oxides and organic materials. The key to unraveling complex phenomena observed in these systems lies in understanding the interplay of ... More

Ultrastrong coupling few-photon scattering theoryJan 17 2017We study the scattering of photons by a two-level system ultrastrongly coupled to a one-dimensional waveguide. Using a combination of the polaron transformation with scattering theory we can compute the one-photon scattering properties of the qubit for ... More

A distribution function correction-based immersed boundary- lattice Boltzmann method with truly second-order accuracy for fluid-solid flowsMar 26 2018The immersed boundary lattice Boltzmann method (IB-LBM) has been widely used in the simulation of fluid-solid interaction and particulate flow problems, since proposed in 2004. However, it is usually a non-trivial task to retain the flexibility and the ... More

UrbanFACET: Visually Profiling Cities from Mobile Device Recorded Movement Data of Millions of City ResidentsJul 13 2017Cities are living systems where urban infrastructures and their functions are defined and evolved due to population behaviors. Profiling the cities and functional regions has been an important topic in urban design and planning. This paper studies a unique ... More

Topological Properties of Spatial Coherence FunctionJul 31 2007Topology of the spatial coherence function is considered in details. The phase singularity (coherence vortices) structures of coherence function are classified by Hopf index and Brouwer degree in topology. The coherence flux quantization and the linking ... More

Star 5-edge-colorings of subcubic multigraphsJul 26 2017Nov 22 2017The star chromatic index of a multigraph $G$, denoted $\chi'_{s}(G)$, is the minimum number of colors needed to properly color the edges of $G$ such that no path or cycle of length four is bi-colored. A multigraph $G$ is star $k$-edge-colorable if $\chi'_{s}(G)\le ... More

Quantum simulation of small-polaron formation with trapped ionsJun 29 2012Nov 19 2012We propose a quantum simulation of small-polaron physics using a one-dimensional system of trapped ions acted upon by off-resonant standing waves. This system, envisioned as an array of microtraps, in the single-excitation case allows the realization ... More

Analytical Study of Electronic Structure in Armchair Graphene NanoribbonsDec 15 2006Dec 16 2006We present the analytical solution of the wavefunction and energy dispersion of armchair graphene nanoribbons (GNRs) based on the tight-binding approximation. By imposing hard-wall boundary condition, we find that the wavevector in the confined direction ... More

Induced Entanglement Enhanced by Quantum CriticalityMay 30 2008Two qubit entanglement can be induced by a quantum data bus interacting with them. In this paper, with the quantum spin chain in the transverse field as an illustration of quantum data bus, we show that such induced entanglement can be enhanced by the ... More

Non-Abelian Parton Fractional Quantum Hall Effect in Multilayer GrapheneMar 07 2016Jul 07 2017The current proposals for producing non-Abelian anyons and Majorana particles, which are neither fermions nor bosons, are primarily based on the realization of topological superconductivity in two dimensions. We show theoretically that the unique Landau ... More

Dissociation of large transverse-momentum prompt J/psi produced in Pb-Pb collisions at the LHCSep 29 2016Jul 27 2017A collision of a light meson and a charmonium produces quarks and antiquarks first, then the charm quark fragments into a charmed hadron, and finally three or more mesons are produced. This is the mechanism that we consider and propose to understand the ... More

Two-Photon Scattering in USC regimeOct 19 2018In this work we study the scattering of pairs of photons by a two-level system ultrastrongly coupled to a one-dimensional waveguide. We describe this problem using a spin-boson model with an Ohmic environment $J(\omega)=\pi\alpha\omega^1.$ We show that ... More

Similarity Search Combining Query Relaxation and DiversificationNov 15 2016Feb 23 2017We study the similarity search problem which aims to find the similar query results according to a set of given data and a query string. To balance the result number and result quality, we combine query result diversity with query relaxation. Relaxation ... More

Renormalization group improved predictions for $t\bar{t}W^\pm$ production at hadron collidersSep 04 2014Nov 13 2014We study the factorization and resummation of the $t\bar{t}W^\pm$ production at hadron colliders. The cross section in the threshold limit can be factorized into a convolution of hard and soft functions and parton distribution functions with the soft-collinear ... More

Theory of Network Contractor Dynamics for Exploring Thermodynamic Properties of Two-dimensional Quantum Lattice ModelsJan 28 2013Aug 19 2013Based on the tensor network state representation, we develop a nonlinear dynamic theory coined as network contractor dynamics (NCD) to explore the thermodynamic properties of two-dimensional quantum lattice models. By invoking the rank-$1$ decomposition ... More

A combined immersed boundary and discrete unified gas kinetic scheme for particle-fluid flowsJan 16 2018A discrete unified gas kinetic scheme (DUGKS) coupled with the immersed boundary (IB) method is developed to perform interface-resolved simulation of particle-laden flows. The present method (IB-DUGKS) preserves the respective advantages of the IB and ... More

Zoom-In-to-Check: Boosting Video Interpolation via Instance-level DiscriminationDec 04 2018Apr 28 2019We propose a light-weight video frame interpolation algorithm. Our key innovation is an instance-level supervision that allows information to be learned from the high-resolution version of similar objects. Our experiment shows that the proposed method ... More

Federated Learning via Over-the-Air ComputationDec 31 2018Feb 17 2019The stringent requirements for low-latency and privacy of the emerging high-stake applications with intelligent devices such as drones and smart vehicles make the cloud computing inapplicable in these scenarios. Instead, edge machine learning becomes ... More

Controlling single-photon transport in waveguides with finite cross-sectionMar 08 2013Aug 02 2013We study the transverse-size effect of a quasi-one-dimensional rectangular waveguide on the single-photon scattering on a two-level system. We calculate the transmission and reflection coefficients for single incident photons using the scattering formalism ... More

Charmonium dissociation cross sections and charmonium dissociation rates in hadronic matterJun 04 2016K*-charmonium dissociation reactions in hadronic matter are studied in the Born approximation, in the quark-interchange mechanism, and with a temperature-dependent quark potential. We obtain the temperature dependence of unpolarized cross sections for ... More

Topological Properties of Phase Singularities in Wave FieldsApr 10 2007Phase singularities as topological objects of wave fields appear in a variety of physical, chemical, and biological scenarios. In this paper, by making use of the $\phi$-mapping topological current theory, we study the topological properties of the phase ... More

FoveaBox: Beyond Anchor-based Object DetectorApr 08 2019We present FoveaBox, an accurate, flexible and completely anchor-free framework for object detection. While almost all state-of-the-art object detectors utilize the predefined anchors to enumerate possible locations, scales and aspect ratios for the search ... More

Transport properties of the hierarchical model for stretched polymersApr 09 1999Apr 10 1999We prove that the hierarchical fractal model recently proposed for describing the stretched polymers [A. N. Samukhin et al, Phys. Rev. Lett.{\bf 78}, 326(1997)] is equivalent to a one-dimensional chain with hierarchical aperiodic structure. By use of ... More

Multi-photon Scattering Theory and Generalized Master EquationsJul 30 2015We develop a scattering theory to investigate the multi-photon transmission in a one-dimensional waveguide in the presence of quantum emitters. It is based on a path integral formalism, uses displacement transformations, and does not require the Markov ... More

Temperature-dependent cross sections for charmonium dissociation in collisions with kaons and eta mesons in hadronic matterJul 15 2015We study kaon-charmonium and eta-charmonium dissociation reactions. The K-charmonium dissociation and the eta-charmonium dissociation include 27 reactions. Cross sections for the reactions are calculated in the Born approximation, in the quark-interchange ... More

Pilot Power Allocation Through User Grouping in Multi-Cell Massive MIMO SystemsMar 22 2016In this paper, we propose a relative channel estimation error (RCEE) metric, and derive closed-form expressions for its expectation $\rm {Exp}_{rcee}$ and the achievable uplink rate holding for any number of base station antennas $M$, with the least squares ... More

Mixed-ADC Massive MIMO Detectors: Performance Analysis and Design OptimizationSep 26 2015Oct 01 2015Using a very low-resolution analog-to-digital convertor (ADC) unit at each antenna can remarkably reduce the hardware cost and power consumption of a massive multiple-input multiple-output (MIMO) system. However, such a pure low-resolution ADC architecture ... More

Topology of Knotted Optical VorticesDec 27 2007Optical vortices as topological objects exist ubiquitously in nature. In this paper, by making use of the $\phi$-mapping topological current theory, we investigate the topology in the closed and knotted optical vortices. The topological inner structure ... More

Consistent Optimization for Single-Shot Object DetectionJan 19 2019Jan 23 2019We present consistent optimization for single stage object detection. Previous works of single stage object detectors usually rely on the regular, dense sampled anchors to generate hypothesis for the optimization of the model. Through an examination of ... More

Coupled cavity QED for coherent control of photon transmission (I): Green function approach for hybrid systems with two-level dopingOct 30 2006Jun 14 2007This is the first one of a series of our papers theoretically studying the coherent control of photon transmission along the coupled resonator optical waveguide (CROW) by doping artificial atoms for various hybrid structures. We will provide the several ... More

Topological Aspect of Knotted Vortex Filaments in Excitable MediaDec 27 2007Scroll waves exist ubiquitously in three-dimensional excitable media. It's rotation center can be regarded as a topological object called vortex filament. In three-dimensional space, the vortex filaments usually form closed loops, and even linked and ... More

Uplink Spectral Efficiency Analysis of Decoupled Access in Multiuser MIMO CommunicationsMay 27 2016In a heterogeneous network consisting of macro base stations (MBSs) and small base stations (SBSs), the traditional cell association policy, i.e., coupled access (CA), is far from optimal, due to the significant difference between the coverage and transmit ... More

Joint Activity Detection and Channel Estimation for IoT Networks: Phase Transition and Computation-Estimation TradeoffOct 01 2018Massive device connectivity is a crucial communication challenge for Internet of Things (IoT) networks, which consist of a large number of devices with sporadic traffic. In each coherence block, the serving base station needs to identify the active devices ... More

Nature of chiral phase transition in QED$_3$ at zero densityAug 27 2014Based on the feature of chiral susceptibility and thermal susceptibility at finite temperature, the nature of chiral phase transition around the critical number of fermion flavors ($N_c$) and the critical temperature ($T_c$) at a fixed fermion flavors ... More

Continuum study of various susceptibilities within thermal QED$_3$Aug 27 2014In this paper, the relations of four different susceptibilities (i.e., the chiral susceptibility, the fermion number susceptibility, the thermal susceptibility and the staggered spin susceptibility) are investigated both in and beyond the chiral limit. ... More

Note on two phase phenomena in financial marketsDec 30 2007The two phase behavior in financial markets actually means the bifurcation phenomenon, which represents the change of the conditional probability from an unimodal to a bimodal distribution. In this paper, the bifurcation phenomenon in Hang-Seng index ... More

Phase diagram and exotic spin-spin correlations of anisotropic Ising model on the Sierpiński gasketNov 06 2013Dec 18 2015The anisotropic antiferromagnetic Ising model on the fractal Sierpi\'{n}ski gasket is intensively studied, and a number of exotic properties are disclosed. The ground state phase diagram in the plane of magnetic field-interaction of the system is obtained. ... More

Solving quantum impurity problems in and out of equilibrium with variational approachJan 17 2018Jul 12 2018A versatile and efficient variational approach is developed to solve in- and out-of-equilibrium problems of generic quantum spin-impurity systems. Employing the discrete symmetry hidden in spin-impurity models, we present a new canonical transformation ... More

Network Synchronization with Nonlinear Dynamics and Switching InteractionsJan 25 2014Aug 24 2015This paper considers the synchronization problem for networks of coupled nonlinear dynamical systems under switching communication topologies. Two types of nonlinear agent dynamics are considered. The first one is non-expansive dynamics (stable dynamics ... More

Dynamic Patterns of Academic Forum ActivitiesApr 26 2015Sep 23 2015A mass of traces of human activities show rich dynamic patterns. In this article, we comprehensively investigate the dynamic patterns of 50 thousands of researchers' activities in Sciencenet, the largest multi-disciplinary academic community in China. ... More

Scaling behavior of an artificial traffic model on scale-free networksAug 31 2006In this article, we investigate an artificial traffic model on scale-free networks. Instead of using the routing strategy of the shortest path, a generalized routing algorithm is introduced to improve the transportation throughput, which is measured by ... More

Hashing on Nonlinear ManifoldsDec 02 2014Learning based hashing methods have attracted considerable attention due to their ability to greatly increase the scale at which existing algorithms may operate. Most of these methods are designed to generate binary codes preserving the Euclidean similarity ... More

Support Vector Guided Softmax Loss for Face RecognitionDec 29 2018Face recognition has witnessed significant progresses due to the advances of deep convolutional neural networks (CNNs), the central challenge of which, is feature discrimination. To address it, one group tries to exploit mining-based strategies (\textit{e.g.}, ... More

Universal Scaling Behavior of Clustering Coefficient Induced by Deactivation MechanismSep 12 2006We propose a model of network growth that generalizes the deactivation model previously suggested for complex networks. Several topological features of this generalized model, such as the degree distribution and clustering coefficient, have been investigated ... More

Colour connections of four quark $Q\bar{Q}Q'\bar{Q}'$ system and doubly heavy baryon production in $e^{+}e^{-}$ annihilationSep 23 2013Jan 25 2014The hadronization effects induced by various colour connections of the four quark system in $e^{+}e^{-}$ annihilation are briefly reviewed. A special colour connection of four heavy quark system without colour-separation favours the production of doubly ... More

Distributed Kalman filtering with minimum-time consensus algorithmMar 16 2017Fueled by applications in sensor networks, these years have witnessed a surge of interest in distributed estimation and filtering. A new approach is hereby proposed for the Distributed Kalman Filter (DKF) by integrating a local covariance computation ... More

Higher bottom and bottom-strange mesonsJan 08 2014Mar 21 2014Motivated by the recent observation of the orbital excitation $B(5970)$ by CDF collaboration, we have performed a systematical study of the mass spectrum and strong decay patterns of the higher $B$ and $B_s$ mesons. Hopefully the present investigation ... More

Discussion for the Solutions of Dyson-Schwinger Equations at m>0 in QED3Aug 19 2013In the case of nonzero fermion mass, within a range of Ansatze for the full fermion-boson vertex, we show that Dyson-Schwinger equation for the fermion propagator in QED3 has two qualitatively distinct dynamical chiral symmetry breaking solutions. As ... More

The chiral phase transition of QED$_3$ around the critical number of fermion flavorsAug 27 2014At zero temperature and density, the nature of the chiral phase transition in QED$_3$ with $\textit{N}_{f}$ massless fermion flavors is investigated. To this end, in Landau gauge, we numerically solve the coupled Dyson-Schwinger equations for the fermion ... More

Transmission gaps from corrugationsDec 10 2015Jul 08 2016A model including a periodically corrugated thin layer with GaAs substrate is employed to investigate the effects of the corrugations on the transmission probability of the nanostructure. We find that transmission gaps and resonant tunneling domains emerge ... More

Gaussian TDVP for the Bose-Hubbard modelJul 10 2019We systematically extend Bogoliubov theory beyond the mean field approximation of the Bose- Hubbard model in the superfluid phase. Our approach is based on the time dependent variational principle applied to the family of all Gaussian states (i.e., Gaussian ... More

Exotic hadron production in quark combination modelJun 13 2009Jun 20 2009The philosophy on production of exotic hadrons (multi-quark states) in the framework of quark combination model is investigated, taking $f_0(980)$ as an example. The production rate and $p_T$ spectra of $f_0(980)$ considered as $(s\bar s)$ or $(s\bar ... More

ScratchDet: Training Single-Shot Object Detectors from ScratchOct 19 2018May 06 2019Current state-of-the-art object objectors are fine-tuned from the off-the-shelf networks pretrained on large-scale classification dataset ImageNet, which incurs some additional problems: 1) The classification and detection have different degrees of sensitivity ... More

Variational principle for quantum impurity systems in and out of equilibrium: application to Kondo problemsFeb 12 2018Jul 12 2018We provide a detailed formulation of the recently proposed variational approach [Y. Ashida et al., Phys. Rev. Lett. 121, 026805 (2018)] to study ground-state properties and out-of-equilibrium dynamics for generic quantum spin-impurity systems. Motivated ... More

Sampled-Data Consensus over Random NetworksMar 23 2015This paper considers the consensus problem for a network of nodes with random interactions and sampled-data control actions. We first show that consensus in expectation, in mean square, and almost surely are equivalent for a general random network model ... More

Study on the power scaling and mode instability property in an all-fiber narrow-linewidth tapered fiber amplifierDec 28 2016We develop a high-power narrow-linewidth fiber amplifier based on a tapered Yb-doped fiber. In the experiment, the narrow end of the tapered fiber is used as the input port of both pump source and signal light to form a robust all-fiber configuration. ... More

Efficient variational approach to dynamics of a spatially extended bosonic Kondo modelMay 23 2019Jun 18 2019We develop an efficient variational approach to studying dynamics of a localized quantum spin coupled to a bath of mobile spinful bosons. We use parity symmetry to decouple the impurity spin from the environment via a canonical transformation and reduce ... More

Fermionic symmetry-protected topological state in strained grapheneAug 27 2017The low-energy physics of graphene is described by relativistic Dirac fermions with spin and valley degrees of freedom. Mechanical strain can be used to create a pseudo magnetic field pointing to opposite directions in the two valleys. We study interacting ... More

Effects of gauge boson mass on chiral and deconfinement phase transitions in QED$_{3}$Aug 16 2016Based on the experimental observation that there is a coexisting region between the antiferromagnetic (AF) and $\textit{d}$-wave superconducting ($\textit{d}$SC) phases, the influences of gauge boson mass $m_{a}$ on chiral symmetry restoration and deconfinement ... More

Effect of gauge boson mass on the phase structure of QED$_{3}$Sep 06 2010Dynamical chiral symmetry breaking (DCSB) in QED$_{3}$ with finite gauge boson mass is studied in the framework of the rainbow approximation of Dyson-Schwinger equations. By adopting a simple gauge boson propagator ansatz at finite temperature, we first ... More

A High-Efficiency Framework for Constructing Large-Scale Face Parsing BenchmarkMay 13 2019Face parsing, which is to assign a semantic label to each pixel in face images, has recently attracted increasing interest due to its huge application potentials. Although many face related fields (e.g., face recognition and face detection) have been ... More

Thermodynamics of Spin-1/2 Kagomé Heisenberg Antiferromagnet: Algebraic Paramagnetic Liquid and Finite-Temperature Phase DiagramNov 03 2017Dec 26 2018Quantum fluctuations from frustration can trigger quantum spin liquids (QSLs) at zero temperature. However, it is unclear how thermal fluctuations affect a QSL. We employ state-of-the-art tensor network-based methods to explore the ground state and thermodynamic ... More

Preparation of Logically Labeled Pure States with Only Two Turns for Bulk Quantum ComputationJun 25 2017Quantum state preparation plays an equally important role with quantum operations and measurements in quantum information processing. The previous methods of preparing initial state for bulk quantum computation all have inevitable disadvantages, such ... More

Scaling and memory in recurrence intervals of Internet trafficMay 24 2009Aug 23 2009By studying the statistics of recurrence intervals, $\tau$, between volatilities of Internet traffic rate changes exceeding a certain threshold $q$, we find that the probability distribution functions, $P_{q}(\tau)$, for both byte and packet flows, show ... More

Over-the-Air Computation via Intelligent Reflecting SurfacesApr 29 2019Over-the-air computation (AirComp) becomes a promising approach for fast wireless data aggregation via exploiting the superposition property in a multiple access channel. To further overcome the unfavorable signal propagation conditions for AirComp, in ... More

Efficient variational approach to dynamics of a spatially extended bosonic Kondo modelMay 23 2019We develop an efficient variational approach to studying dynamics of a localized quantum spin coupled to a bath of mobile spinful bosons. We use parity symmetry to decouple the impurity spin from the environment via a canonical transformation and reduce ... More

Quantum simulation of quantum channels in nuclear magnetic resonanceApr 19 2017Dec 17 2017We propose and experimentally demonstrate an efficient framework for the quantum simulation of quantum channels in NMR. Our approach relies on the suitable decomposition of non-unitary operators in a linear combination of $d$ unitary ones, which can be ... More

Cooperative Set Aggregation for Multiple Lagrangian SystemsFeb 10 2014In this paper, we study the cooperative set tracking problem for a group of Lagrangian systems. Each system observes a convex set as its local target. The intersection of these local sets is the group aggregation target. We first propose a control law ... More

Threshold resummation for the production of a color sextet (antitriplet) scalar at the LHCMay 22 2013Mar 03 2014We investigate threshold resummation effects in the production of a color sextet (antitriplet) scalar at next-to-next-to-leading logarithmic (NNLL) order at the LHC in the frame of soft-collinear effective theory. We show the total cross section and the ... More

A Novel Apex-Time Network for Cross-Dataset Micro-Expression RecognitionApr 07 2019Jul 08 2019The automatic recognition of micro-expression has been boosted ever since the successful introduction of deep learning approaches. Whilst researchers working on such topics are moving to learn from the nature of micro-expression, the practice of using ... More

Bethe ansatz solution of the $τ_2$-model with arbitrary boundary fieldsAug 22 2016Nov 14 2016The quantum $\tau_2$-model with generic site-dependent inhomogeneity and arbitrary boundary fields is studied via the off-diagonal Bethe Ansatz method. The eigenvalues of the corresponding transfer matrix are given in terms of an inhomogeneous T-Q relation, ... More

Solitons on Noncommutative Torus as Elliptic Algebras and Elliptic ModelsOct 15 2001Apr 19 2002For the noncommutative torus ${\cal T}$, in case of the N.C. parameter $\theta = \frac{Z}{n}$ and the area of ${\cal T}$ is an integer, we construct the basis of Hilbert space ${\cal H}_n$ in terms of $\theta$ functions of the positions $z_i$ of $n$ solitons. ... More

Constraints on Randall-Sundrum model from the events of dijet production with QCD next-to-leading order accuracy at the LHCAug 12 2014Mar 03 2015We study the dijet production in Randall-Sundrum model at the LHC with QCD next-to-leading(NLO) order accuracy. Our results show that the QCD NLO corrections can increase the total cross sections by more than $80\%$ and reduce the scale dependence. We ... More

Construnctions of LOCC indistinguishable set of generalized Bell statesMay 23 2018In this paper, we mainly consider the local indistinguishability of the set of mutually orthogonal bipartite generalized Bell states (GBSs). We construct small sets of GBSs with cardinality smaller than $d$ which are not distinguished by one-way local ... More

Featureless quantum spin liquid, 1/3-magnetization plateau state and exotic thermodynamic properties of spin-1/2 frustrated Heisenberg antiferromagnet on an infinite Husimi latticeAug 19 2013Feb 26 2014By utilizing tensor-network-based methods, we investigate the zero- and finite-temperature properties of the spin-1/2 Heisenberg antiferromagnetic (HAF) model on an infinite Husimi lattice that contains 3/2 sites per triangle. The ground state of this ... More

The Extended Bose Hubbard Model on the Two Dimensional Honeycomb LatticeJan 06 2007Mar 29 2007We study the extended Bose-Hubbard model on a two-dimensional honeycomb lattice by using large scale quantum Monte Carlo simulations. We present the ground state phase diagrams for both the hard-core case and the soft-core case. For the hard-core case, ... More

Group-based ranking method for online rating systems with spamming attacksJan 04 2015Ranking problem has attracted much attention in real systems. How to design a robust ranking method is especially significant for online rating systems under the threat of spamming attacks. By building reputation systems for users, many well-performed ... More

Dynamical gap generation in 2D Dirac semimetal with deformed Dirac coneJul 29 2017According to the extensive theoretical and experimental investigations, it is widely accepted that the long-range Coulomb interaction is too weak to generate a dynamical excitonic gap in graphene with a perfect Dirac cone. We study the impact of the deformation ... More

Calculation of the staggered spin correlation in the framework of the Dyson-Schwinger approachJun 13 2013Based on the linear response of the fermion propagator with respect to an external field, we first derive a model-independent expression for the staggered spin susceptibility in which the influence of the full pseudoscalar vertex function is included. ... More

Exclusive Production Ratio of Neutral over Charged Kaon Pair in $e^+e^-$ Annihilation Continuum via `Straton Model'Jun 27 2019Jul 09 2019A completely relativistic quark model in the Bethe-Salpter framework is employed to calculate the exclusive production ratio of the neutral over charged Kaon pair in $e^+e^-$ annihilation continuum region for center of mass energies smaller than the $J/\Psi$ ... More

In Situ Simultaneous Measuring Forces Acted on Individual Legs of Water Striders According to Archimedes' PrincipleJan 05 2016The supporting forces of all the legs have been simultaneously measured through a natural phenomenon inspired shadow method, by capturing water strider leg shadows to calculate the expelled water volume and the equivalent floating forces according to ... More