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Results for "Wei-Chen Lin"

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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
Spin-1 charmonium-like states in QCD sum ruleSep 21 2012We study the possible spin-1 charmonium-like states by using QCD sum rule approach. We calculate the two-point correlation functions for all the local form tetraquark interpolating currents with $J^{PC}=1^{--}, 1^{-+}, 1^{++}$ and $1^{+-}$ and extract ... More
A groupoidification of the fermion algebraFeb 19 2016In this paper, we consider the groupoidification of the fermion algebra. We construct a groupoid as the categorical analogues of the fermionic Fock space, and the creation and annihilation operators correspond to spans of groupoids. The categorical fermionic ... More
A Novel VSWR-Protected and Controllable CMOS Class E Power Amplifier for Bluetooth ApplicationsAug 06 2011This paper describes the design of a differential class-E PA for Bluetooth applications in 0.18um CMOS technology with load mismatch protection and power control features. The breakdown induced by load mismatch can be avoided by attenuating the RF power ... 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
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
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
Connections of geometric measure of entanglement of pure symmetric states to quantum state estimationOct 12 2010Jan 14 2011We study the geometric measure of entanglement (GM) of pure symmetric states related to rank-one positive-operator-valued measures (POVMs) and establish a general connection with quantum state estimation theory, especially the maximum likelihood principle. ... 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
Consistency of Tachyacoustic Cosmology with de Sitter Swampland ConjecturesDec 11 2018Jan 10 2019Recent studies show that there is tension between the de Sitter swampland conjectures proposed by Obeid, et al. and inflationary cosmology. In this paper, we consider an alternative to inflation, `tachyacoustic' cosmology, in light of swampland conjectures. ... More
A Numerical Analysis to the {$π$} and {K} Coupled--Channel Scalar Form-factorMay 29 2000Jul 22 2000A numerical analysis to the scalar form-factor in the $\pi\pi$ and KK coupled--channel system is made by solving the coupled-channel dispersive integral equations, using the iteration method. The solutions are found not unique. Physical application to ... 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
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
DSCOVR: Randomized Primal-Dual Block Coordinate Algorithms for Asynchronous Distributed OptimizationOct 13 2017Machine learning with big data often involves large optimization models. For distributed optimization over a cluster of machines, frequent communication and synchronization of all model parameters (optimization variables) can be very costly. A promising ... 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 $J^{PC} = 0^{+-}$ 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
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
A note on Ξ_c(3055)^+ and Ξ_c(3123)^+Oct 01 2007Oct 03 2007Babar Collaboration announced two new excited charmed baryons $\Xi_c(3055)^+$ and $\Xi_c(3123)^+$. We study their strong decays assuming they are D-wave states. Some assignments are excluded by comparing our numerical results with the experimental values ... More
Exotic $QQ\bar{q}\bar{q}$, $QQ\bar{q}\bar{s}$ and $QQ\bar{s}\bar{s}$ statesSep 24 2012Jan 09 2013After constructing the possible $J^P=0^-, 0^+, 1^-$ and $1^+$ $QQ\bar{q}\bar{q}$ tetraquark interpolating currents in a systematic way, we investigate the two-point correlation functions and extract the corresponding masses with the QCD sum rule approach. ... 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
The magnetic moments and electromagnetic form factors of the decuplet baryons in chiral perturbation theoryAug 16 2016Mar 21 2017We have systematically investigated the magnetic moments and magnetic form factors of the decuplet baryons to the next-to-next-leading order in the framework of the heavy baryon chiral perturbation theory. Our calculation includes the contributions from ... More
Decays of $D_{sj}^*(2317)$ and $D_{sj}(2460)$ Mesons in the Quark ModelApr 11 2006Jul 20 2006We study the decay widths of the narrow resonances $D_{sj}^*(2317)$ and $D_{sj}(2460)$ in the chiral quark model, together with the well-known $D^\ast$ and $D_s^*$ mesons. All the parameters in our calculation are taken from Godfrey and Isgur's quark ... 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
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
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
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
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
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
Strong decays of charmed baryonsApr 01 2007Apr 20 2007There has been important experimental progress in the sector of heavy baryons in the past several years. We study the strong decays of the S-wave, P-wave, D-wave and radially excited charmed baryons using the $^3P_0$ model. After comparing the calculated ... More
Electron and hole lifetime in monolayer grapheneDec 28 2018Excited conduction electrons, conduction holes, and valence holes in monolayer electron-doped graphene exhibit unusual Coulomb decay rates. The deexcitation processes are studied using the screened exchange energy. They might utilize the intraband single-particle ... More
A Proximity-Aware Hierarchical Clustering of FacesMar 14 2017In this paper, we propose an unsupervised face clustering algorithm called "Proximity-Aware Hierarchical Clustering" (PAHC) that exploits the local structure of deep representations. In the proposed method, a similarity measure between deep features is ... 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
Masses of doubly heavy-quark baryons in an extended chromomagnetic modelJan 26 2018Mar 26 2018We extend the chromomagnetic model by further considering the effect of color interaction. The effective mass parameters between quark pairs ($m_{qq}$ or $m_{q\bar{q}}$) are introduced to account both the effective quark masses and the color interaction ... More
Study on the mechanism of open-flavor strong decaysMay 09 2011Jul 08 2011The open-flavor strong decays are studied based on the interaction of potential quark model. The decay process is related to the s-channel contribution of the same scalar confinment and one-gluon-exchange(OGE) interaction in the quark model. After we ... 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
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
Masses of the tensor mesons with $J^{P}=2^{-}$Jul 25 2011Aug 24 2014We calculate the two-point correlation function using the interpolating current with $J^{PC}=2^{-}$. After performing the Borel sum rule analysis, the extracted masses of the $2^{--}$ tensor charmonium and bottomonium are $3.97\pm0.25$ GeV and $10.13\pm0.34$ ... More
Dynamical study of the possible molecular state X(3872) with the s-channel one gluon exchange interactionOct 26 2009The recently observed X(3872) resonance, which is difficult to be assigned a conventional $c\bar{c}$ charmonium state in the quark model, may be interpreted as a molecular state. Such a molecular state is a hidden flavor four quark state because of its ... More
Minimum Shear Viscosity over Entropy Density at Phase Transition? --- A CounterexampleOct 15 2010Nov 18 2010The ratio eta/s, shear viscosity (eta) to entropy density (s), reaches its local minimum at the (second order) phase transition temperature in a wide class of systems. It was suspected that this behavior might be universal. However, a counterexample is ... More
Detection of the Prodromal Phase of Bipolar Disorder from Psychological and Phonological Aspects in Social MediaDec 26 2017Seven out of ten people with bipolar disorder are initially misdiagnosed and thirty percent of individuals with bipolar disorder will commit suicide. Identifying the early phases of the disorder is one of the key components for reducing the full development ... More
Masses of the Bottom-Charm Hybrid $\bar bGc$ StatesJun 14 2013Jan 07 2014QCD sum rules are used to study the mass spectrum of bottom-charm hybrid $\bar bGc$ systems. The correlation functions and the spectral densities are calculated up to dimension six condensates at leading order of $\alpha_s$ for several $J^P$ quantum numbers. ... 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
Meson Electro-Magnetic Form Factors in an Extended Nambu--Jona-Lasinio model including Heavy Quark FlavorsApr 15 2015Jun 21 2015Based on an extended NJL model including heavy quark flavors, we calculate the form factors of pseudo-scalar and vector mesons. After take into account of the vector-meson-dominance effect which introduce a form factor correction to the quark vector coupling ... More
Understanding the Flavor Symmetry Breaking and Nucleon Flavor-Spin Structure within Chiral Quark ModelMar 31 2007Apr 26 2007In $\XQM$, a quark can emit Goldstone bosons. The flavor symmetry breaking in the Goldstone boson emission process is used to intepret the nucleon flavor-spin structure. In this paper, we study the inner structure of constituent quarks implied in $\XQM$ ... More
Doubling algorithm for the discretized Bethe-Salpeter eigenvalue problemJan 03 2018The discretized Bethe-Salpeter eigenvalue problem arises in the Green's function evaluation in many body physics and quantum chemistry. Discretization leads to a matrix eigenvalue problem for $H \in \mathbb{C}^{2n\times 2n}$ with a Hamiltonian-like structure. ... More
A variant two-Higgs doublet model with a new Abelian gauge symmetryFeb 04 2019Feb 22 2019We consider a two-Higgs doublet model extended with a broken Abelian gauge symmetry under which all Standard Model (SM) quarks, fourth generation fermions and a new SM-singlet scalar boson are charged. Such a setup is shown to be able to accommodate the ... More
Evoking complex neuronal networks by stimulating a single neuronApr 12 2016The dynamical responses of complex neuronal networks to external stimulus injected on a \emph{single} neuron are investigated. Stimulating the largest-degree neuron in the network, it is found that as the intensity of the stimulus increases, the network ... More
Cosmological and Solar-System Tests of f(R) Modified GravitySep 17 2010We investigate the cosmological and the local tests of the f(R) theory of modified gravity via the observations of (1) the cosmic expansion and (2) the cosmic structures and via (3) the solar-system experiments. To fit the possible cosmic expansion histories ... 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
Partonic effects on higher-order anisotropic flows in relativistic heavy-ion collisionsDec 29 2003Mar 16 2004Higher-order anisotropic flows $v_{4}$ and $v_{6}$ in heavy ion collisions at the Relativistic Heavy Ion Collider are studied in a multiphase transport model that has previously been used successfully for describing the elliptic flow $v_2$ in these collisions. ... More
Robust Influence MaximizationJan 25 2016Jun 12 2016In this paper, we address the important issue of uncertainty in the edge influence probability estimates for the well studied influence maximization problem --- the task of finding $k$ seed nodes in a social network to maximize the influence spread. We ... More
Fast two-snapshot structured illumination for temporal focusing microscopy with enhanced axial resolutionOct 16 2017We present a new two-snapshot structured light illumination (SLI) reconstruction algorithm for fast image acquisition. The new algorithm, which only requires two mutually {\pi} phase-shifted raw structured images, is implemented on a custom-built temporal ... More
Regularizing RNNs for Caption Generation by Reconstructing The Past with The PresentMar 30 2018Apr 07 2018Recently, caption generation with an encoder-decoder framework has been extensively studied and applied in different domains, such as image captioning, code captioning, and so on. In this paper, we propose a novel architecture, namely Auto-Reconstructor ... More
Dynamical Analysis of Attractor Behavior in Constant Roll InflationApr 12 2019There has been considerable recent interest in a new class of non-slow roll inflationary solutions known as \textit{constant roll} inflation. Constant roll solutions are a generalization of the ultra-slow roll (USR) solution, where the first Hubble slow ... 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
Modified Padé Approach to the S-Wave Charmonium Spectroscopy in QCDOct 01 2010May 19 2011We calculate the $S$-wave charmonium spectroscopy using the Hamiltonian with the non-relativistic QCD (NRQCD) potential. The logarithmic factor $\ln \mu r$, appearing in the next-to-leading order QCD loop corrections to the potential, is expanded about ... More
The heavy mesons in Nambu--Jona-Lasinio modelMay 02 2012We propose an extended Nambu--Jona-Lasinio model to include the heavy mesons with the heavy quark symmetry. The quark current-current interaction is generalized to include the heavy quark currents. In order to comply with the heavy quark spin symmetry ... More
Proposal for detecting nodal-line semimetal surface-states with resonant spin-flipped reflectionJan 31 2018Oct 01 2018Topological nodal-line semimetals are predicted to exhibit unique drumhead-like surface states (DSS). Yet, a direct detection of such states remains a challenge. Here, we propose spin-resolved transport in a junction between a normal metal and a spin-orbit ... More
Triply heavy $QQ\bar Q\bar q$ tetraquark statesAug 01 2017Nov 29 2017Within the framework of QCD sum rules, we have investigated the tetraquark states with three heavy quarks. We systematically construct the interpolating currents for the possible $cc\bar{c}\bar{q}$, $cc\bar{b}\bar{q}$, $bc\bar{b}\bar{q}$, $bb\bar{b}\bar{q}$ ... More
Combining Traditional Marketing and Viral Marketing with Amphibious Influence MaximizationJul 13 2015In this paper, we propose the amphibious influence maximization (AIM) model that combines traditional marketing via content providers and viral marketing to consumers in social networks in a single framework. In AIM, a set of content providers and consumers ... More
Electron and hole lifetime in monolayer grapheneDec 28 2018Feb 23 2019Excited conduction electrons, conduction holes, and valence holes in monolayer electron-doped graphene exhibit unusual Coulomb decay rates. The deexcitation processes are studied using the screened exchange energy. They might utilize the intraband single-particle ... 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
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
$D^*\bar D^*$ 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
The $J^P=1^+$ $ud\bar s\bar s$ TetraquarkNov 11 2005Using the color-magnetic interaction Hamiltonian with SU(3) flavor symmetry breaking, we perform a schematic study of the masses of the $J^P=1^+$ tetraquarks in the anti-decuplet representation. After diagonalizing the mass matrix, we find the $ud\bar ... More
The Possible Heavy Tetraquarks $qQ\bar q \bar Q$, $qq\bar Q \bar Q$ and $qQ\bar Q \bar Q$Jul 20 2006Assuming X(3872) is a $qc \bar q \bar c$ tetraquark and using its mass as input, we perform a schematic study of the masses of possible heavy tetraquarks using the color-magnetic interaction with the flavor symmetry breaking corrections.
Strong decay patterns of the hidden-charm tetraquarksDec 07 2015Dec 14 2015With the spin rearrangement, we have performed a comprehensive investigation of the decay patterns of the S-wave tetraquarks and P-wave tetraquarks where the P-wave excitation exists either between the diquark and anti-diquark pair or inside the diquark. ... More
Pionic Decays of $D_{sj}(2317)$, $D_{sj}(2460)$ and $B_{sj}(5718)$, $B_{sj}(5765)$Feb 17 2006We estimate pionic decay widths of the narrow charm-strange resonances $D_{sj}(2317)$ and $D_{sj}(2460)$ using the $^3P_0$ model. Their one-pion decays occur through $\eta$-$\pi^0$ mixing while the two-pion decays of $D_{sj}(2460)$ occur through the virtual ... More
Three body open flavor decays of higher charmonium and bottomoniumNov 22 2018Feb 26 2019In the present work, we study the OZI-allowed three body open flavor decay properties of higher vector charmonium and bottomonium states with an extended quark pair creation model. For the bottomonium system, we get that (i) the $BB\pi$ and $B^*B^*\pi$ ... 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
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
Radiative Decays of Decuplet Baryons, $Λ(1405)$ and $Λ (1520)$ HyperonsFeb 19 2006The chiral quark model gives a reasonably good description of many low-energy observables by incorporating the effective degrees carried by the constituent quarks and Goldstone bosons. We calculate the decuplet to octet transition magnetic moments and ... 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
A study on speech enhancement using exponent-only floating point quantized neural network (EOFP-QNN)Aug 17 2018Oct 30 2018Numerous studies have investigated the effectiveness of neural network quantization on pattern classification tasks. The present study, for the first time, investigated the performance of speech enhancement (a regression task in speech processing) using ... 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
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
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
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 2016Sep 07 2017We develop a moment QCD sum rule method augmented by fundamental inequalities 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 ... More
Pentaquark and Tetraquark statesMar 28 2019Apr 01 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
$a_1(1420)$ resonance as a tetraquark state and its isospin partnerMar 09 2015May 21 2015We systematically construct tetraquark currents of $I^GJ^{PC}=1^-1^{++}$ and classify them into types $\mathbf{A}$ (antisymmetric), $\mathbf{S}$ (symmetric) and $\mathbf{M}$ (mixed), based on flavor symmetries of diquarks and antidiquarks composing the ... More
Towards exotic hidden-charm pentaquarks in QCDJul 14 2015Sep 27 2015Inspired by $P_c(4380)$ and $P_c(4450)$ recently observed by LHCb, a QCD sum rule investigation is performed, by which they can be identified as exotic hidden-charm pentaquarks composed of an anti-charmed meson and a charmed baryon. Our results suggest ... 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
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
QCD sum rule calculation for P-wave bottom baryonsOct 18 2015Nov 24 2015We study the P-wave bottom baryons using the method of QCD sum rule and heavy quark effective theory. Our results suggest that Lambda_b(5912) and Lambda_b(5920) can be well described by the baryon doublet [3F_bar, 1, 1, rho], and they belong to the SU(3) ... More
Searching for hidden-charm baryonium signals in QCD sum rulesMay 24 2016Nov 04 2016We give an explicit QCD sum rule investigation to hidden-charm baryonium states with the quark content $u\bar u d\bar d c\bar c$, spin $J=0/1/2/3$, and of both positive and negative parities. We systematically construct the relevant local hidden-charm ... More
A suggested search for doubly charmed baryons of $J^P=3/2^+$ via their electromagnetic transitionsDec 11 2017Jan 31 2018We use the method of light-cone sum rules to study the electromagnetic transition of the $\Xi^{*++}_{cc}$ into $\Xi^{++}_{cc}\gamma$, whose decay width is estimated to be $13.7~{^{+17.7}_{-~7.9}}$ keV. This value is large enough for the $\Xi^{*++}_{cc}$ ... More
COCO-GAN: Generation by Parts via Conditional CoordinatingMar 30 2019Apr 16 2019Humans can only interact with part of the surrounding environment due to biological restrictions. Therefore, we learn to reason the spatial relationships across a series of observations to piece together the surrounding environment. Inspired by such behavior ... More
COCO-GAN: Generation by Parts via Conditional CoordinatingMar 30 2019Humans can only interact with part of the surrounding environment due to biological restrictions. Therefore, we learn to reason the spatial relationships across a series of observations to piece together the surrounding environment. Inspired by such behavior ... 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
Absolute Frequency Measurement of the 378 nm Transition in ThalliumMar 07 2007Mar 21 2013The absolute frequency measurement for all of the hyperfine transitions of 6P1/2 -> 7S1/2 using a self-referencing frequency comb is reported. This transition can be used as a bench marker for the accurate atomic wave function, and then improve the calculation ... More