Results for "Wei-Chen Lin"

total 54648took 0.13s
Possible $J^{PC} = 0^{--}$ Charmonium-like StateMar 19 2010Jun 07 2010We study the possible charmonium-like states with $J^{PC}=0^{--}, 0^{-+}$ using the tetraquark interpolating currents with the QCD sum rules approach. The extracted masses are around 4.5 GeV for the $0^{--}$ charmonium-like states and 4.6 GeV for the ... More
Surface magnetic states of Ni nanochains modified by using different organic surfactantsJan 02 2010Three powder samples of Ni nanochains formed of polycrystalline Ni nanoparticles with an estimated diameter of about 30 nm have been synthesized by a wet chemical method using different organic surfactants. These samples, having magnetically/structurally ... More
Lower and upper bounds for entanglement of Rényi-$α$ entropyApr 11 2016Dec 24 2016Entanglement R\'enyi-$\alpha$ entropy is an entanglement measure. It generalizes the entanglement of formation, and they coincide when $\alpha$ tends to 1. We derive analytical lower and upper bounds for the entanglement R\'enyi-$\alpha$ entropy of arbitrary ... More
Assessing Percolation Threshold Based on High-Order Non-Backtracking MatricesOct 26 2016Feb 18 2017Percolation threshold of a network is the critical value such that when nodes or edges are randomly selected with probability below the value, the network is fragmented but when the probability is above the value, a giant component connecting large portion ... More
Real-time Topic-aware Influence Maximization Using PreprocessingMar 01 2014Nov 21 2014Influence maximization is the task of finding a set of seed nodes in a social network such that the influence spread of these seed nodes based on certain influence diffusion model is maximized. Topic-aware influence diffusion models have been recently ... More
Dusty disc-planet interaction with dust-free simulationsMay 02 2018Protoplanets may be born into dust-rich environments if planetesimals formed through streaming or gravitational instabilities, or if the protoplanetary disc is undergoing mass loss due to disc winds or photoevaporation. Motivated by this possibility, ... More
Finite size effect on Neel temperature with Co3O4 nanoparticlesMay 30 2007Oct 16 2007Finite size effect on the antiferromagnetic transition temperature, TN, of Co3O4 nanoparticles of 75, 35, and 16 nm in diameter, has been investigated. The AFM transition point, TN, reduces with the decreasing diameter, d. Along with the results from ... More
The hidden-charm pentaquark and tetraquark statesJan 09 2016May 22 2016In the past decade many charmonium-like states were observed experimentally. Especially those charged charmonium-like $Z_c$ states and bottomonium-like $Z_b$ states can not be accommodated within the naive quark model. These charged $Z_c$ states are good ... More
Possible interpretations of the $P_c(4312)$, $P_c(4440)$, and $P_c(4457)$Mar 26 2019Mar 27 2019Based on our previous QCD sum rule studies on hidden-charm pentaquark states, we discuss possible interpretations of the $P_c(4312)$, $P_c(4440)$, and $P_c(4457)$, which were recently observed by LHCb. Our results suggest that the $P_c(4312)$ can be well ... More
Unsupervised Single Image Deraining with Self-supervised ConstraintsNov 21 2018Most existing single image deraining methods require learning supervised models from a large set of paired synthetic training data, which limits their generality, scalability and practicality in real-world multimedia applications. Besides, due to lack ... More
Possible $J^{PC} = 0^{+-}$ Exotic StateMar 23 2012Mar 27 2012We study the possible exotic states with $J^{PC} = 0^{+-}$ using the tetraquark interpolating currents with the QCD sum rule approach. The extracted masses are around 4.85 GeV for the charmonium-like states and 11.25 GeV for the bottomomium-like states. ... More
Decuplet to octet baryon transitions in chiral perturbation theoryJun 18 2017We have systematically investigated the decuplet (T) to octet (B) baryon ($T\rightarrow B\gamma$) transition magnetic moments to the next-to-next-to-leading order and electric quadruple moments to the next-to-leading order in the framework of the heavy ... More
Dynamics of quantum discord in the purification processJan 13 2011Dec 07 2013We investigate the dynamics of quantum discord during the purification process. In the case of Werner states, it is shown that quantum discord is increased after a round of purification protocol. Furthermore, quantum mutual information and classical correlation ... More
Boosting Information Spread: An Algorithmic ApproachFeb 09 2016Jun 26 2017The majority of influence maximization (IM) studies focus on targeting influential seeders to trigger substantial information spread in social networks. In this paper, we consider a new and complementary problem of how to further increase the influence ... More
Semiclassical Quantization Rule for Bound-State Spectrum in Quantum Dots: Scattering Phase ApproximationMar 18 2003Jun 19 2003We study the quantum propagator in the semiclassical limit with sharp confining potentials. Including the energy-dependent scattering phase due to sharp confining potential, the modified Van Vleck's formula is derived. We also discuss the close relations ... More
Stereoscopic Omnidirectional Image Quality Assessment Based on Predictive Coding TheoryJun 12 2019Objective quality assessment of stereoscopic omnidirectional images is a challenging problem since it is influenced by multiple aspects such as projection deformation, field of view (FoV) range, binocular vision, visual comfort, etc. Existing studies ... More
A Chip-scale, Full-Stokes PolarimeterNov 23 2018The polarization of light conveys unique information that can be exploited by crucial applications. The bulky and costly discrete optical components used in conventional polarimeters limit their broad adoption. A compact, low-cost polarimeter would bring ... More
Energy-Efficient Deterministic Adaptive Beamforming Algorithms for Distributed Sensor/Relay NetworksSep 09 2015In this study, energy-efficient deterministic adaptive beamforming algorithms are proposed for distributed sensor/relay networks. Specifically, DBSA, D-QESA, D-QESA-E, and a hybrid algorithm, hybrid-QESA, that combines the benefits of both deterministic ... More
Boosting Information Spread: An Algorithmic ApproachFeb 09 2016Influence maximization has been actively studied in recent years. The majority of prior studies focus on how to target highly influential users as initial adopters so that they can trigger substantial information cascades in social networks. In this paper, ... More
The Three-body Force and the Tetraquark Interpretation of Light Scalar MesonsOct 24 2007We study the possible tetraquark interpretation of light scalar meson states $a_0(980)$, $f_0(980)$, $\kappa$, $\sigma$ within the framework of the non-relativistic potential model. The wave functions of tetraquark states are obtained in a space spanned ... More
Learning to Guide Decoding for Image CaptioningApr 03 2018Recently, much advance has been made in image captioning, and an encoder-decoder framework has achieved outstanding performance for this task. In this paper, we propose an extension of the encoder-decoder framework by adding a component called guiding ... More
Heavy tetraquark states and quarkonium hybridsMar 28 2014May 05 2014Many of the $XYZ$ resonances observed by the Belle, Babar, CLEO and BESIII collaborations in the past decade are difficult to interpret as conventional quark-antiquark mesons, motivating the consideration of scenarios such as multi-quark states, meson ... More
Topological and Geometric Universal Thermodynamics in Conformal Field TheoryJan 23 2018Jun 29 2018Universal thermal data in conformal field theory (CFT) offer a valuable means for characterizing and classifying criticality. With improved tensor network techniques, we investigate the universal thermodynamics on a nonorientable minimal surface, the ... More
Meson Decays in an Extended Nambu--Jona-Lasinio model with Heavy Quark FlavorsApr 18 2013In a previous work, we proposed an extended Nambu--Jona-Lasinio (NJL) model including heavy quark flavors. In this work, we will calculate strong and radiative decays of vector mesons in this extended NJL model, including light $\rho$, $\omega$, $K^*$, ... More
SOFAR: large-scale association network learningApr 26 2017Many modern big data applications feature large scale in both numbers of responses and predictors. Better statistical efficiency and scientific insights can be enabled by understanding the large-scale response-predictor association network structures ... More
Exotic open-flavor $bc\bar{q}\bar{q}$, $bc\bar{s}\bar{s}$ and $qc\bar{q}\bar{b}$, $sc\bar{s}\bar{b}$ tetraquark statesOct 30 2013Apr 08 2014We study the exotic $bc\bar{q}\bar{q}$, $bc\bar{s}\bar{s}$ and $qc\bar{q}\bar{b}$, $sc\bar{s}\bar{b}$ systems by constructing the corresponding tetraquark currents with $J^P=0^+$ and $1^+$. After investigating the two-point correlation functions and the ... More
Novel View Synthesis for Large-scale Scene using Adversarial LossFeb 20 2018Novel view synthesis aims to synthesize new images from different viewpoints of given images. Most of previous works focus on generating novel views of certain objects with a fixed background. However, for some applications, such as virtual reality or ... More
Non-equilibrium quantum phase transition via entanglement decoherence dynamicsOct 13 2016We investigate the decoherence dynamics of continuous variable entanglement as the system-environment coupling strength varies from the weak-coupling to the strong-coupling regimes. Due to the existence of localized modes in the strong-coupling regime, ... More
3D Human Pose Machines with Self-supervised LearningJan 12 2019Jan 15 2019Driven by recent computer vision and robotic applications, recovering 3D human poses has become increasingly important and attracted growing interests. In fact, completing this task is quite challenging due to the diverse appearances, viewpoints, occlusions ... More
Synaptic Strength For Convolutional Neural NetworkNov 06 2018Convolutional Neural Networks(CNNs) are both computation and memory intensive which hindered their deployment in mobile devices. Inspired by the relevant concept in neural science literature, we propose Synaptic Pruning: a data-driven method to prune ... More
Graphene on Au-coated SiOx substrate: Its core-level photoelectron micro-spectroscopy studyMay 23 2012The core-level electronic structures of the exfoliated graphene sheets on a Au-coated SiOx substrate have been studied by synchrotron radiation photoelectron spectroscopy (SR-PES) on a micron-scale. The graphene was firstly demonstrated its visibility ... More
Ni/Ni3C Core-Shell Nanochains and Its Magnetic Properties: One-Step Synthesis at low temperatureDec 11 2008One-dimensional Ni/Ni3C core-shell nanoball chains with an average diameter by around 30 nm were synthesized by means of a mild chemical solution method using a soft template of trioctylphosphineoxide (TOPO). It was revealed that the uniform Ni nanochains ... More
Size-dependent magnetic properties of Nickel nano-chainsOct 07 2005Jul 11 2006Magnetic properties with 3 different sizes of Ni nanochains, synthesized by a technique of wet chemical solution, have been investigated experimentally. The sample sizes are 50 nm, 75 nm, and 150 nm with a typical length of a few microns. The characterizations ... More
Hidden-charm pentaquarks and $P_c$ statesApr 22 2019Recently, the LHCb Collaboration reported three $P_c$ states in the ${J/\psi}p$ channel. We systematically study the mass spectrum of the hidden charm pentaquark in the framework of an extended chromomagnetic model. For the $nnnc\bar{c}$ pentaquark with ... More
$D^*\bar D^*$ molecule interpretation of $Z_c(4025)$Aug 23 2013Feb 18 2014We have used QCD sum rules to study the newly observed charged state $Z_c(4025)$ as a hidden-charm $D^*\bar D^*$ molecular state with the quantum numbers $I^G(J^{P})=1^+(1^{+})$. Using a $D^*\bar D^*$ molecular interpolating current, we have calculated ... More
Magnetic Moment of The $Θ^+$ Pentaquark StateNov 10 2003Jan 10 2004We have calculated the magnetic moment of the recently observed $\Theta^+$ pentaquark in the framework of the light cone QCD sum rules using the photon distribution amplitudes. We find that $\mu_{\Theta^+}=(0.12\pm 0.06) \mu_N$, which is quite small. ... More
Online Hyper-parameter Learning for Auto-Augmentation StrategyMay 17 2019Data augmentation is critical to the success of modern deep learning techniques. In this paper, we propose Online Hyper-parameter Learning for Auto-Augmentation (OHL-Auto-Aug), an economical solution that learns the augmentation policy distribution along ... More
Understanding the internal structures of the $X(4140)$, $X(4274)$, $X(4500)$ and $X(4700)$Jun 10 2016Jun 28 2016We investigate the newly observed $X(4500)$ and $X(4700)$ based on the diquark-antidiquark configuration within the framework of QCD sum rules. Both of them may be interpreted as the $D$-wave $cs\bar{c}\bar{s}$ tetraquark states of $J^P = 0^+$, but with ... More
IncepText: A New Inception-Text Module with Deformable PSROI Pooling for Multi-Oriented Scene Text DetectionMay 03 2018May 08 2018Incidental scene text detection, especially for multi-oriented text regions, is one of the most challenging tasks in many computer vision applications. Different from the common object detection task, scene text often suffers from a large variance of ... More
QCD sum rule study of hidden-charm pentaquarksFeb 07 2016We study the mass spectra of hidden-charm pentaquarks having spin $J = {1\over2},{3\over2},{5\over2}$ and quark contents $uud c \bar c$. We systematically construct all the relevant local hidden-charm pentaquark currents, and select some of them to perform ... More
Pentaquark and Tetraquark statesMar 28 2019The past seventeen years have witnessed tremendous progress on the experimental and theoretical explorations of the multiquark states. The hidden-charm and hidden-bottom multiquark systems were reviewed extensively in [Phys. Rept. 639 (2016) 1-121]. In ... More
Zc(4200)+ decay width as a charmonium-like tetraquark stateJan 16 2015Aug 27 2015To identify the nature of the newly observed charged resonance Zc(4200), we study its hadronic decays Zc(4200) -> J/psi pi, Zc(4200) -> eta_c rho and Zc(4200) -> D bar D* as a charmonium-like tetraquark state. In the framework of the QCD sum rules, we ... More
Doubly hidden-charm/bottom $QQ\bar Q\bar Q$ tetraquark statesMar 07 2018Mar 13 2018We study the mass spectra for the $cc\bar c\bar c$ and $bb\bar b\bar b$ tetraquark states by developing a moment sum rule method. Our results show that the $bb\bar b\bar b$ tetraquarks lie below the threshold of $\eta_b(1S)\eta_b(1S)$. They are probably ... More
Decay properties of $P$-wave charmed baryons from light-cone QCD sum rulesMar 22 2017May 22 2017We study decay properties of the $P$-wave charmed baryons using the method of light-cone QCD sum rules, including the $S$-wave decays of the flavor $\mathbf{\bar 3}_F$ $P$-wave charmed baryons into ground-state charmed baryons accompanied by a pseudoscalar ... More
Decoding the $X(5568)$ as a fully open-flavor $su\bar b\bar d$ tetraquark stateFeb 29 2016Jun 17 2016We investigate the recent evidence for a charged $X(5568)$ meson as an exotic open-flavor tetraquark state $su\bar b\bar d$ with $J^P=0^+/1^+$ in the framework of QCD sum rules. We use the color antisymmetric $[\mathbf{\bar 3_c}]_{su} \otimes [\mathbf{3_c}]_{\bar{b}\bar ... More
Mass spectra of Zc and Zb exotic states as hadron moleculesMay 21 2015Aug 27 2015We construct charmonium-like and bottomonium-like molecular interpolating currents with quantum numbers J(PC)=1(+-) in a systematic way, including both color singlet-singlet and color octet-octet structures. Using these interpolating currents, we calculate ... More
Hunting for exotic doubly hidden-charm/bottom tetraquark statesMay 05 2016We extend a moment QCD sum rule method to study the existence of exotic doubly hidden-charm/bottom tetraquark states made of four heavy quarks. Using the compact diquark-antidiquark configuration, we calculate the mass spectra of these tetraquark states. ... More
Fine-grained Video Attractiveness Prediction Using Multimodal Deep Learning on a Large Real-world DatasetApr 04 2018Apr 07 2018Nowadays, billions of videos are online ready to be viewed and shared. Among an enormous volume of videos, some popular ones are widely viewed by online users while the majority attract little attention. Furthermore, within each video, different segments ... More
Real-Time Referring Expression Comprehension by Single-Stage Grounding NetworkDec 09 2018In this paper, we propose a novel end-to-end model, namely Single-Stage Grounding network (SSG), to localize the referent given a referring expression within an image. Different from previous multi-stage models which rely on object proposals or detected ... More
Topology Attack and Defense for Graph Neural Networks: An Optimization PerspectiveJun 10 2019Graph neural networks (GNNs) which apply the deep neural networks to graph data have achieved significant performance for the task of semi-supervised node classification. However, only few work has addressed the adversarial robustness of GNNs. In this ... More
Deep Descriptor Transforming for Image Co-LocalizationMay 08 2017Reusable model design becomes desirable with the rapid expansion of machine learning applications. In this paper, we focus on the reusability of pre-trained deep convolutional models. Specifically, different from treating pre-trained models as feature ... More
Framed Deformation of Galois RepresentationApr 01 2008We studied framed deformations of two dimensional Galois representation of which the residue representation restrict to decomposition groups are scalars, and established a modular lifting theorem for certain cases. We then proved a family version of the ... More
Resonant second-harmonic-generation circular-dichroism microscopy reveals molecular chirality in native biological tissuesFeb 15 2016Conventional linear optical activity effects are widely used for studying chiral materials. However, poor contrast and artifacts due to sample anisotropy limit the applicability of these methods. Here we demonstrate that nonlinear second-harmonic-generation ... More
Time Consistent Bid-Ask Dynamic Pricing Mechanisms for Contingent Claims and Its Numerical Simulations Under UncertaintyNov 18 2011Sep 28 2013We study time consistent dynamic pricing mechanisms of European contingent claims under uncertainty by using G framework introduced by Peng ([24]). We consider a financial market consisting of a riskless asset and a risky stock with price process modelled ... More
Fractional G-White Noise Theory, Wavelet Decomposition for Fractional G-Brownian Motion, and Bid-Ask Pricing Application to Finance Under UncertaintyJun 18 2013G-framework is presented by Peng [41] for measure risk under uncertainty. In this paper, we define fractional G-Brownian motion (fGBm). Fractional G-Brownian motion is a centered G-Gaussian process with zero mean and stationary increments in the sense ... More
Single-crystalline aluminum film for ultraviolet plasmonic nanolasersMay 21 2015Plasmonic devices have advanced significantly in the past decade. Being one of the most intriguing devices, plamonic nanolasers plays an important role in biomedicine, chemical sensor, information technology, and optical integrated circuits. However, ... More
Blue photoluminescence from chemically derived graphene oxideSep 13 2009Fluorescent organic compounds are of significant importance to the development of low-cost opto-electronic devices. Blue fluorescence from aromatic or olefinic molecules and their derivatives is particularly important for display and lighting applications. ... More
Phase transition behavior in a cellular automaton model with different initial configurationsFeb 28 2011We investigate the dynamical transition from free-flow to jammed traffic, which is related to the divergence of the relaxation time and susceptibility of the energy dissipation rate $E_d$, in the Nagel-Schreckenberg (NS) model with two different initial ... More
G-Doob-Meyer Decomposition and its Application in Bid-Ask Pricing for American Contingent Claim Under Knightian UncertaintyDec 31 2013The target of this paper is to establish the bid-ask pricing frame work for the American contingent claims against risky assets with G-asset price systems (see \cite{Chen2013b}) on the financial market under Knight uncertainty. First, we prove G-Dooby-Meyer ... More
Orthogonal Quantum Group Invariants of LinksJul 09 2010We study the Chern-Simons partition function of orthogonal quantum group invariants, and propose a new orthogonal Labastida-Mari\~{n}o-Ooguri-Vafa conjecture as well as degree conjecture for free energy associated to the orthogonal Chern-Simons partition ... More
Phase Transition in (2+1)d Quantum GravityApr 05 1994(2+1) dimensional gravity is equivalent to an exactly soluble non-Abelian Chern-Simons gauge field theory (E Witten 1988). Regarding this as the topological phase of quantum gravity in (2+1)d, we suggest a topological symmetry breaking by introducing ... More
G-consistent price system and bid-ask pricing for European contingent claims under Knightian uncertaintyAug 28 2013Sep 17 2013The target of this paper is to consider model the risky asset price on the financial market under the Knightian uncertainty, and pricing the ask and bid prices of the uncertain risk. We use the nonlinear analysis tool, i.e., G-frame work [26], to construct ... More
Scaling Theory of Topological Phase TransitionsMay 20 2015Jan 20 2016Topologically ordered systems are characterized by topological invariants that are often calculated from the momentum space integration of a certain function that represents the curvature of the many-body state. The curvature function may be Berry curvature, ... More
Data sets of very large linear feasibility problems solved by projection methodsMar 14 2011We give a link to a page on the Web on which we deposited a set of eight huge Linear Programming (LP) problems for Intensity-Modulated Proton Therapy (IMPT) treatment planning. These huge LP problems were employed in our recent research and we were asked ... More
Inductance Due to Spin CurrentJun 11 2013Mar 17 2014The inductance of spintronic devices that transport charge neutral spin currents is discussed. It is known that in a media that contains charge neutral spins, a time-varying electric field induces a spin current. We show that since the spin current itself ... More
Dijet Asymmetry in the Resummation Improved Perturbative QCD ApproachDec 13 2016Dec 22 2016We develop the first systematic theoretical approach to dijet asymmetries in hadron-hadron collisions based on the perturbative QCD (pQCD) expansion and the Sudakov resummation formalism. We find that the pQCD calculation at next-to-leading order is indispensable ... More
Nearly Optimal Stochastic Approximation for Online Principal Subspace EstimationNov 17 2017Aug 15 2018Processing streaming data as they arrive is often necessary for high dimensional data analysis. In this paper, we analyse the convergence of a subspace online PCA iteration, as a followup of the recent work of Li, Wang, Liu, and Zhang [Math. Program., ... More
Equilibrium vortex lattices of a binary rotating atomic Bose-Einstein condensate with unequal atomic massesMay 20 2016We perform a detailed numerical study of the equilibrium ground-state structures of a binary rotating Bose-Einstein condensate with unequal atomic masses. Our results show that the ground-state distribution and its related vortex configurations are complex ... More
Kondo screening of Andreev bound states in an N-QD-S systemDec 12 2015Oct 20 2016Motivated by experimental observation of the Kondo-enhanced Andreev transport [R. S. Deacon \textit{et al.}, PRB \textbf{81}, 121308(R) (2010)] in a hybrid normal metal-quantum dot-superconductor (N-QD-S) device, we theoretically study the Kondo effect ... More
Decreasing the uncertainty of atomic clocks via real-time noise distinguishApr 18 2016The environmental perturbation on atoms is the key factor restricting the performance of atomic frequency standards, especially in long term scale. In this letter, we demonstrate a real-time noise distinguish operation of atomic clocks. The operation ... More
DSNet: An Efficient CNN for Road Scene SegmentationApr 10 2019Road scene understanding is a critical component in an autonomous driving system. Although the deep learning-based road scene segmentation can achieve very high accuracy, its complexity is also very high for developing real-time applications. It is challenging ... More
Efficient Road Lane Marking Detection with Deep LearningSep 11 2018Lane mark detection is an important element in the road scene analysis for Advanced Driver Assistant System (ADAS). Limited by the onboard computing power, it is still a challenge to reduce system complexity and maintain high accuracy at the same time. ... More
Generating Realistic Training Images Based on Tonality-Alignment Generative Adversarial Networks for Hand Pose EstimationNov 25 2018Dec 20 2018Hand pose estimation from a monocular RGB image is an important but challenging task. The main factor affecting its performance is the lack of a sufficiently large training dataset with accurate hand-keypoint annotations. In this work, we circumvent this ... More
Simultaneous Integer Relation Detection and Its an ApplicationJun 26 2009Jan 25 2010Let $\mathbf{x_1}, ..., \mathbf{x_t} \in \mathbb{R}^{n}$. A simultaneous integer relation (SIR) for $\mathbf{x_1}, ..., \mathbf{x_t}$ is a vector $\mathbf{m} \in \mathbb{Z}^{n}\setminus\{\textbf{0}\}$ such that $\mathbf{x_i}^T\mathbf{m} = 0$ for $i = ... More
Unsupervised Object Discovery and Co-Localization by Deep Descriptor TransformingJul 20 2017Reusable model design becomes desirable with the rapid expansion of computer vision and machine learning applications. In this paper, we focus on the reusability of pre-trained deep convolutional models. Specifically, different from treating pre-trained ... More
Tensor Robust Principal Component Analysis: Exact Recovery of Corrupted Low-Rank Tensors via Convex OptimizationAug 14 2017May 26 2018This paper studies the Tensor Robust Principal Component (TRPCA) problem which extends the known Robust PCA (Candes et al. 2011) to the tensor case. Our model is based on a new tensor Singular Value Decomposition (t-SVD) (Kilmer and Martin 2011) and its ... More
Rashba induced Kondo screening of a magnetic impurity in two-dimensional superconductorMar 12 2018We study the Kondo screening of a magnetic impurity in a two-dimensional superconductor with Rashba spin-orbit coupling (SOC). It is found that the Rashba interaction generates a novel Kondo screening channel, in which the local moment is screened by ... More
Probing Transverse Momentum Broadening via Dihadron and Hadron-jet Angular Correlations in Relativistic Heavy-ion CollisionsJul 07 2016May 31 2017Dijet, dihadron, hadron-jet angular correlations have been reckoned as important probes of the transverse momentum broadening effects in relativistic nuclear collisions. When a pair of high-energy jets created in hard collisions traverse the quark-gluon ... More
Spin 3/2 PentaquarksMar 17 2005Jun 06 2005We investigate the possible existence of the spin 3/2 pentaquark states using interpolating currents with K-N color-octet structure in the framework of QCD finite energy sum rule (FESR). We pay special attention to the convergence of the operator product ... More
Improved Parton Distribution Functions at Physical Pion MassAug 17 2017We present the first lattice results on isovector unpolarized and longitudinally polarized parton distribution functions (PDFs) at physical pion mass. The PDFs are obtained using the large-momentum effective field theory (LaMET) framework where the full ... More
Formation of Nanofoam carbon and re-emergence of Superconductivity in compressed CaC6Nov 09 2013Nov 27 2013Pressure can tune material's electronic properties and control its quantum state, making some systems present disconnected superconducting region as observed in iron chalcogenides and heavy fermion CeCu2Si2. For CaC6 superconductor (Tc of 11.5 K), applying ... More
Anisotropic Fabry-Pérot resonant states confined within nano-steps on the topological insulator surfaceJul 04 2014The peculiar nature of topological surface states, such as absence of backscattering, weak anti-localization, and quantum anomalous Hall effect, has been demonstrated mainly in bulk and film of topological insulator (TI), using surface sensitive probes ... More
Macroblock Classification Method for Video Applications Involving MotionsFeb 28 2015In this paper, a macroblock classification method is proposed for various video processing applications involving motions. Based on the analysis of the Motion Vector field in the compressed video, we propose to classify Macroblocks of each video frame ... More
Landau quantization in buckled monolayer GaAsMay 17 2017Magneto-electronic properties of buckled monolayer GaAs is studied by the developed generalized tight-binding model, considering the buckled structure, multi-orbital chemical bondings, spin-orbit coupling, electric field, and magnetic field simultaneously. ... More
Coarse-to-fine: A RNN-based hierarchical attention model for vehicle re-identificationDec 11 2018Vehicle re-identification is an important problem and becomes desirable with the rapid expansion of applications in video surveillance and intelligent transportation. By recalling the identification process of human vision, we are aware that there exists ... More
DIAG-NRE: A Neural Pattern Diagnosis Framework for Distantly Supervised Neural Relation ExtractionNov 06 2018Jun 10 2019Pattern-based labeling methods have achieved promising results in alleviating the inevitable labeling noises of distantly supervised neural relation extraction. However, these methods require significant expert labor to write relation-specific patterns, ... More
A Design Based on Stair-case Band Alignment of Electron Transport Layer for Improving Performance and Stability in Planar Perovskite Solar CellsAug 10 2017Among the n-type metal oxide materials used in the planar perovskite solar cells, zinc oxide (ZnO) is a promising candidate to replace titanium dioxide (TiO2) due to its relatively high electron mobility, high transparency, and versatile nanostructures. ... More
Nucleon Helicity and Transversity Parton Distributions from Lattice QCDMar 22 2016We present the first lattice-QCD calculation of the isovector polarized parton distribution functions (both helicity and transversity) using the large-momentum effective field theory (LaMET) approach for direct Bjorken-$x$ dependence. We first review ... More
Exothermic isospin-violating dark matter after SuperCDMS and CDEXApr 24 2014Mar 02 2015We show that exothermic isospin-violating dark matter (IVDM) can make the results of the latest CDMS-Si experiment consistent with recent null experiments, such as XENON10, XENON100, LUX, CDEX, and SuperCDMS, whereas for the CoGeNT experiment, a strong ... More
Partially unstable attractors in networks of forced integrate-and-fire oscillatorsApr 13 2017The asymptotic attractors of a nonlinear dynamical system play a key role in the long-term physically observable behaviors of the system. The study of attractors and the search for distinct types of attractor have been a central task in nonlinear dynamics. ... More
Learning to Segment Human by Watching YouTubeOct 04 2017Feb 28 2018An intuition on human segmentation is that when a human is moving in a video, the video-context (e.g., appearance and motion clues) may potentially infer reasonable mask information for the whole human body. Inspired by this, based on popular deep convolutional ... More
Shear Viscosity in Weakly Coupled N-Component Scalar Field TheoriesOct 15 2010Nov 18 2010The rich phenomena of the shear viscosity (eta) to entropy density (s) ratio, eta/s, in weakly coupled N-component scalar field theories are studied. eta/s can have a "double dip" behavior due to resonances and the phase transition. If an explicit goldstone ... More
Tensor Robust Principal Component Analysis with A New Tensor Nuclear NormApr 10 2018Mar 07 2019In this paper, we consider the Tensor Robust Principal Component Analysis (TRPCA) problem, which aims to exactly recover the low-rank and sparse components from their sum. Our model is based on the recently proposed tensor-tensor product (or t-product). ... More
Quantum simulation of the Weyl equation with a trapped ionDec 15 2017Apr 04 2019The Weyl equation describes chiral massless relativistic particles, called Weyl fermions, which have important relations to neutrinos. A direct observation of the dynamics of Weyl fermions in an experiment is difficult to achieve. This study investigates ... More
Fano resonance in a normal metal/ferromagnet-quantum dot-superconductor deviceSep 16 2015We investigate theoretically the Andreev transport through a quantum dot strongly coupled with a normal metal/ferromagnet and a superconductor (N/F-QD-S), in which the interplay between the Kondo resonance and the Andreev bound states (ABSs) has not been ... More
AM-LFS: AutoML for Loss Function SearchMay 17 2019Designing an effective loss function plays an important role in visual analysis. Most existing loss function designs rely on hand-crafted heuristics that require domain experts to explore the large design space, which is usually sub-optimal and time-consuming. ... More
Image Deformation Meta-Networks for One-Shot LearningMay 28 2019Humans can robustly learn novel visual concepts even when images undergo various deformations and loose certain information. Mimicking the same behavior and synthesizing deformed instances of new concepts may help visual recognition systems perform better ... More
A Block Lanczos with Warm Start Technique for Accelerating Nuclear Norm Minimization AlgorithmsDec 02 2010Dec 26 2010Recent years have witnessed the popularity of using rank minimization as a regularizer for various signal processing and machine learning problems. As rank minimization problems are often converted to nuclear norm minimization (NNM) problems, they have ... More
Dixit: Interactive Visual Storytelling via Term ManipulationMar 06 2019May 31 2019In this paper, we introduce Dixit, an interactive visual storytelling system that the user interacts with iteratively to compose a short story for a photo sequence. The user initiates the process by uploading a sequence of photos. Dixit first extracts ... More
Highly Efficient Quantum Key Distribution Immune to All Detector AttacksOct 10 2014Aug 23 2016Vulnerabilities and imperfections of single-photon detectors have been shown to compromise security for quantum key distribution (QKD). The measurement-device-independent QKD (MDI-QKD) appears to be the most appealing solution to solve the issues. However, ... More