Results for "Bo Yang"

total 19653took 0.10s
A characterization of Koiso's typed solitonsFeb 04 2008By extending Koiso's examples to the non-compact case, we construct complete gradient Kahler-Ricci solitons of various types on certain holomorphic line bundles over compact Kahler-Einstein manifolds. Moreover, a uniformization result on steady gradient ... More
Dirac Cone Metric and the Origin of the Spin Connections in Monolayer GrapheneFeb 05 2014Jun 11 2015We show that the modulation of the hopping amplitudes in the honeycomb lattice of the monolayer graphene uniquely defines a metric which corresponds to the shape of the Dirac cone. The spin connection of this effective metric field can be obtained from ... More
Geometric Aspects and Neutral Excitations in the Fractional Quantum Hall EffectDec 10 2013In this thesis, I will present studies on the collective modes of the fractional quantum Hall states, which are bulk neutral excitations reflecting the incompressibility that defines the topological nature of these states. It was first pointed out by ... More
Inverse electromagnetic scattering problems by a doubly periodic structureMay 04 2013Consider the problem of scattering of electromagnetic waves by a doubly periodic structure. The medium above the structure is assumed to be inhomogeneous characterized completely by an index of refraction. Below the structure is a perfect conductor or ... More
Hirzebruch manifolds and positive holomorphic sectional curvatureNov 20 2016This paper is the first step in a systematic project to study examples of K\"ahler manifolds with positive holomorphic sectional curvature ($H > 0$). Previously Hitchin proved that any compact K\"ahler surface with $H>0$ must be rational and he constructed ... More
Unitarity Method with Spurious PoleJun 25 2008Dec 13 2008In unitarity cut method, compact input of on-shell tree level amplitudes is crucial to simplify calculations. Although BCFW on-shell recursion relation gives very compact tree level amplitudes, they usually contain spurious poles. In this paper, we present ... More
On Curvature Tensors of Hermitian ManifoldsFeb 03 2016In this article, we examine the behavior of the Riemannian and Hermitian curvature tensors of a Hermitian metric, when one of the curvature tensors obeys all the symmetry conditions of the curvature tensor of a K\"ahler metric. We will call such metrics ... More
Skew group algebras of deformed preprojective algebrasMar 09 2010Mar 21 2010Suppose that $Q$ is a finite quiver and $G\subseteq \Aut(Q)$ is a finite group, $k$ is an algebraic closed field whose characteristic does not divide the order of $G$. For any algebra $\Lambda=kQ/{\mathcal {I}}$, $\mathcal {I}$ is an arbitrary ideal of ... More
Seiberg Duality in Matrix Models IINov 24 2002Apr 16 2003In this paper we continue the investigation, within the context of the Dijkgraaf-Vafa Programme, of Seiberg duality in matrix models as initiated in hep-th/0211202, by allowing degenerate mass deformations. In this case, there are some massless fields ... More
An Observation on Finite Groups and WZW Modular InvariantsSep 11 2000In this short note, inspired by much recent activity centered around attempts to formulate various correspondences between the classification of affine SU(k) WZW modular-invariant partition functions and that of discrete finite subgroups of SU(k), we ... More
Lorentz violation in three-family neutrino oscillationOct 06 2009We analyze the consequences of Lorentz violation (LV) to three-generation neutrino oscillation in the massless neutrino sector. We present a general formalism of three-family neutrino oscillation with neutrino flavor states being mixing states of energy ... More
All-optical controlled phase gate in quantum dot moleculesFeb 26 2014May 19 2015We propose a two-qubit optically controlled phase gate in quantum dot molecules via adiabatic passage and hole tunneling. Our proposal combines the merits of the current generation of vertically stacked self-assembled InAs quantum dots and adiabatic passage. ... More
The set of all orthogonal complex structures on the flat $6$-toriApr 19 2016In \cite{BSV}, Borisov, Salamon and Viaclovsky constructed non-standard orthogonal complex structures on flat tori $T^{2n}_{\mathbb R}$ for any $n\geq 3$. We will call these examples BSV-tori. In this note, we show that on a flat $6$-torus, all the orthogonal ... More
Standardization, Distance, Host Galaxy Extinction of Type Ia Supernova and Hubble Diagram from the Flux Ratio MethodOct 29 2009Jun 30 2010In this paper we generalize the flux ratio method Bailey et al. (2009) to the case of two luminosity indicators and search the optimal luminosity-flux ratio relations on a set of spectra whose phases are around not only the date of bright light but also ... More
Uniqueness in inverse acoustic and electromagnetic scattering by penetrable obstaclesMay 04 2013May 16 2013This paper considers the inverse problem of scattering of time-harmonic acoustic and electromagnetic plane waves by bounded, inhomogeneous, penetrable obstacles in a homogeneous background medium. A new method is proposed to prove the unique determination ... More
D^0-D^0bar mixing in Υ(1S) \to D^0 D^0bar decay at Super-BOct 06 2006Nov 13 2006$\Dz-\Dzb$ mixing and significant CP violation in the charm system may indicate the signature of new physics. In this study, we suggest that the coherent $\DzDzb$ events from the decay of $\Upsilon(1S) \to \Dz \Dzb$ can be used to measure both mixing ... More
Single Target-Spin Asymmetry in Semi-Inclusive Deep Inelastic Scattering on Transversely Polarized Nucleon TargetJun 19 2007We use a new set of Collins functions to update a previous prediction on the azimuthal asymmetries of pion productions in semi-inclusive deep inelastic scattering (SIDIS) process on a transversely polarized nucleon target. We find that the calculated ... More
Microscopic Statistical Characterisation of the Congested Traffic Flow and Some Salient Empirical FeaturesMar 14 2016We present large scale and detailed analysis of the microscopic empirical data of the traffic flow, focusing on the non-linear interactions between the vehicles when the traffic is congested. By implementing a "renormalisation" procedure that averages ... More
About Detecting CP-Violating Processes in $J/ψ\to \KzKzb $ DecayJul 25 2006Questions about detecting CP-violating decay process of $J/\psi\to K^0\bar{K}^0\to K_SK_S$ are discussed. Possible background and material regeneration effect are analyzed. The discussion can be directly extended to other vector quarkonium decays, like ... More
D-Brane Gauge Theories from Toric Singularities and Toric DualityMar 13 2000May 13 2000Via partial resolution of Abelian orbifolds we present an algorithm for extracting a consistent set of gauge theory data for an arbitrary toric variety whose singularity a D-brane probes. As illustrative examples, we tabulate the matter content and superpotential ... More
Z-D Brane Box Models and Non-Chiral Dihedral QuiversSep 17 1999Generalising ideas of an earlier work \cite{Bo-Han}, we address the problem of constructing Brane Box Models of what we call the Z-D Type from a new point of view, so as to establish the complete correspondence between these brane setups and orbifold ... More
A lower bound for the scalar curvature of certain steady gradient Ricci solitonsFeb 22 2011In this very short note we prove a lower bound for the scalar curvature of certain steady gradient Ricci solitons.
A necessary and sufficient condition for Ricci shrinkers to have positive AVRJan 18 2011In this short note we observe that a recent result of C.-W. Chen meshes well with earlier work of H.-D. Cao and D.-T. Zhou, O. Munteanu, J. Carrillo and L. Ni, and S.-J. Zhang to give a necessary and sufficient condition for complete noncompact shrinking ... More
Nature of Quasielectrons and the Continuum of Neutral Bulk Excitations in the Laughlin Quantum Hall FluidsAug 22 2013Jan 17 2014We construct model wavefunctions for a family of single-quasielectron states supported by the $\nu=1/3$ fractional quantum Hall (FQH) fluid. The charge $e^*$ = $e/3$ quasielectron state is identified as a composite of a charge-$2e^*$ quasiparticle and ... More
Distortion of Interference Fringes and the Resulting Vortex Production of Merging Bose-Einstein CondensatesDec 30 2009Aug 01 2013We investigate the effects of interatomic interactions and expansion on the distortion of interference fringes of a pair of initially well-separated, but coherent, condensate clouds trapped in a harmonic trap. The distortion of interference fringes, which ... More
Testing the Uniqueness of the Open Bosonic String Field Theory VacuumMar 14 2001Apr 19 2001The operators K_n are generators of reparameterization symmetries of Witten's cubic open string field theory. One pertinent question is whether they can be utilised to generate deformations of the tachyon vacuum and thereby violate its uniqueness. We ... More
On Bismut Flat ManifoldsMar 23 2016Jul 09 2016In this paper, we give a classification of all compact Hermitian manifolds with flat Bismut connection. We show that the torsion tensor of such a manifold must be parallel, thus the universal cover of such a manifold is a Lie group equipped with a bi-invariant ... More
A $\hbar$-deformation of the $W_{N}$ algebra and its vertex operatorsJan 21 1997In this paper,we derive a $\hbar$-deformation of the $W_{N}$ algebra and its quantum Miura tranformation. The vertex operators for this $\hbar$-deformed $W_{N}$ algebra and its commutation relations are also obtained.
An inverse electromagnetic scattering problem for a bi-periodic inhomogeneous layer on a perfectly conducting plateMar 16 2010This paper is concerned with uniqueness for reconstructing a periodic inhomogeneous medium covered on a perfectly conducting plate. We deal with the problem in the frame of time-harmonic Maxwell systems without TE or TM polarization. An orthogonal relation ... More
Modelling the level of adoption of analytical tools; An implementation of multi-criteria evidential reasoningFeb 11 2016In the future, competitive advantages will be given to organisations that can extract valuable information from massive data and make better decisions. In most cases, this data comes from multiple sources. Therefore, the challenge is to aggregate them ... More
Rare Semileptonic Decays of Heavy Mesons with Flavor SU(3) SymmetrySep 07 2007Dec 01 2008In this paper, we calculate the decay rates of $D^+ \to D^0 e^+ \nu$, $D^+_S \to D^0 e^+ \nu$, $B^0_S \to B^+ e^- \bar{\nu}$, $D^+_S \to D^+ e^- e^+$ and $B^0_S \to B^0 e^-e^+$ semileptonic decay processes, in which only the light quarks decay, while ... More
The inverse electromagnetic scattering problem in a piecewise homogeneous mediumJan 18 2010This paper is concerned with the problem of scattering of time-harmonic electromagnetic waves from an impenetrable obstacle in a piecewise homogeneous medium. The well-posedness of the direct problem is established, employing the integral equation method. ... More
The Spectrum of the Neumann Matrix with Zero ModesFeb 26 2002Mar 20 2002We calculate the spectrum of the matrix M' of Neumann coefficients of the Witten vertex, expressed in the oscillator basis including the zero-mode a_0. We find that in addition to the known continuous spectrum inside [-1/3,0) of the matrix M without the ... More
Zeeman Spectroscopy of the Star AlgebraMar 20 2002We solve the problem of finding all eigenvalues and eigenvectors of the Neumann matrix of the matter sector of open bosonic string field theory, including the zero modes, and switching on a background B-field. We give the discrete eigenvalues as roots ... More
The dynamical twisting and nondynamical r-matrix structure of elliptic Ruijsenaars-Schneider modelFeb 22 1998Sep 15 1999From the dynamical twisting of the classical r-matrix, we obtain a new Lax operator for the elliptic Ruijsenaars-Schneider model (cf. Ruijsenaars'). The corresponding r-matrix is shown to be the classical $Z_n$-symmetric elliptic r-matrix, which is the ... More
The nondynamical r-matrix structure of the elliptic Ruijsenaars-Schneider model with N=2Feb 22 1998We demonstrate that in a certain gauge the elliptic Ruijsenaars-Shneider model with N=2 admits a nondynamical r-matrix structure and the corresponding classical r-matrix is the same as that of its non-relativistic counterpart (Calogero-Moser model) in ... More
The nondynamical r-matrix structure of the elliptic Calogero-Moser modelNov 12 1997In this paper, we construct a new Lax operator for the elliptic Calogero-Moser model with N=2. The nondynamical r-matrix structure of this Lax operator is also studied . The relation between our Lax operator and the Lax operator given by Krichever is ... More
A $\hbar$-deformed Virasoro Algebra as Hidden Symmetry of the Restricted sine-Gordon ModelDec 26 1996Jan 21 1997As the Yangian double with center,which is deformed from affine algebra by the additive loop parameter $\hbar$ ,we get the commuting relation and the bosonization of quantum $\hbar$-deformed Virasoro algebra. The corresponding Miura transformation, associated ... More
How Much Frequency Can Be Reused in 5G Cellular Networks---A Matrix Graph ModelJan 19 2014Apr 11 2014The 5th Generation cellular network may have the key feature of smaller cell size and denser resource employment, resulted from diminishing resource and increasing communication demands. However, small cell may result in high interference between cells. ... More
Parallel Triangular Solvers on GPUJun 02 2016In this paper, we investigate GPU based parallel triangular solvers systematically. The parallel triangular solvers are fundamental to incomplete LU factorization family preconditioners and algebraic multigrid solvers. We develop a new matrix format suitable ... More
Hierarchical Maximum Margin Learning for Multi-Class ClassificationFeb 14 2012Due to myriads of classes, designing accurate and efficient classifiers becomes very challenging for multi-class classification. Recent research has shown that class structure learning can greatly facilitate multi-class learning. In this paper, we propose ... More
Polynomial Structures in One-Loop AmplitudesMar 21 2008Sep 17 2008A general one-loop scattering amplitude may be expanded in terms of master integrals. The coefficients of the master integrals can be obtained from tree-level input in a two-step process. First, use known formulas to write the coefficients of (4-2epsilon)-dimensional ... More
Counting Gauge Invariants: the Plethystic ProgramJan 08 2007Mar 04 2007We propose a programme for systematically counting the single and multi-trace gauge invariant operators of a gauge theory. Key to this is the plethystic function. We expound in detail the power of this plethystic programme for world-volume quiver gauge ... More
On Correspondences Between Toric Singularities and (p,q)-websMar 12 2004We study four-dimensional N=1 gauge theories which arise from D3-brane probes of toric Calabi-Yau threefolds. There are some standing paradoxes in the literature regarding relations among (p,q)-webs, toric diagrams and various phases of the gauge theories, ... More
Phase Structure of D-brane Gauge Theories and Toric DualityApr 30 2001Jun 11 2001Harnessing the unimodular degree of freedom in the definition of any toric diagram, we present a method of constructing inequivalent gauge theories which are world-volume theories of D-branes probing the same toric singularity. These theories are various ... More
The $Z_k \times D_{k'}$ Brane Box ModelJun 04 1999An example of a non-Abelian Brane Box Model, namely one corresponding to a $Z_k \times D_{k'}$ orbifold singularity of $\C^3$, is constructed. Its self-consistency and hence equivalence to geometrical methods are subsequently shown. It is demonstrated ... More
Energy conditions and DK stability criterion in the non-local gravityNov 22 2016We study and derive the energy conditions and the Dolgov-Kawasaki (DK) stability criterion in non-local gravity, which is the modified theory of general relativity (GR) obtained by adding a term $m^2R\Box^{-2}R$ to the Einstein-Hilbert action. Moreover, ... More
Analytic Wavefunctions for Neutral Bulk Excitations in Fractional Quantum Hall FluidsJun 27 2013We show the model wavefunctions for the neutral collective modes in fractional quantum Hall (FQH) states have simple analytic forms obtained from judicially reducing the powers of selected pairs in the ground state Jastrow factor. This scheme of "pair ... More
On a problem of Yau regarding a higher dimensional generalization of the Cohn-Vossen inequalityApr 03 2011We show that a problem by Yau can not be true in general. The counterexamples are constructed based on the recent work of Wu and Zheng.
Analytic Wavefunctions for Collective Modes in Fractional Quantum Hall FluidsMar 25 2013Apr 12 2013We show model wavefunctions for neutral collective modes in fractional quantum Hall (FQH) states have simple analytic forms obtained from judicially reducing the powers of selected pairs in the ground state Jastrow factor. This scheme of "pair excitations" ... More
Hierarchicality of Trade Flow Networks Reveals Complexity of ProductsJan 14 2014With globalization, countries are more connected than before by trading flows, which currently amount to at least 36 trillion dollars. Interestingly, approximately 30-60 percent of global exports consist of intermediate products. Therefore, the trade ... More
Strange quark momentum fraction from overlap fermionFeb 19 2015Mar 10 2015We present a calculation of $< x >_s$ for the strange quark in the nucleon. We also report the ratio of the strange $< x >$ to that of $u/d$ in the disconnected insertion which will be useful in constraining the global fit of parton distribution functions ... More
The Lax pairs for elliptic C_n and BC_n Ruijsenaars-Schneider models and their spectral curvesNov 16 2000Jan 21 2001We study the elliptic C_n and BC_n Ruijsenaars-Schneider models which is elliptic generalization of system given in hep-th/0006004. The Lax pairs for these models are constructed by Hamiltonian reduction technology. We show that the spectral curves can ... More
The Quark-Antiquark Asymmetry of the Nucleon Sea from $Λ$ and $\barΛ$ FragmentationMay 22 2000We present a general analysis of the spin transfer for $\Lambda$ and $\bar{\Lambda}$ production in deep-inelastic scattering of polarized charged leptons on the nucleon, and find that the pattern of different behaviors of $\Lambda$ and $\bar{\Lambda}$ ... More
Understanding the proton spin "puzzle" with a new "minimal" quark modelSep 11 2002Sep 17 2002We investigate the spin structure of the nucleon in an extended Jaffe-Lipkin quark model. In addition to the conventional $3q$ structure, different $(3q)(Q\bar{Q})$ admixtures in the nucleon wavefunction are also taken into account. The contributions ... More
Content Protection in Named Data Networking: Challenges and Potential SolutionsOct 26 2018Information-Centric Networks (ICN) are promising alternatives to current Internet architecture since the Internet struggles with a number of issues such as scalability, mobility and security. ICN offers a number of potential benefits including reduced ... More
Attentional Aggregation of Deep Feature Sets for Multi-view 3D ReconstructionAug 02 2018We study the problem of recovering an underlying 3D shape from a set of images. Existing learning based approaches usually resort to recurrent neural nets, e.g., GRU, or intuitive pooling operations, e.g., max/mean pooling, to fuse multiple deep features ... More
An Algebraic Approach to the Scattering EquationsSep 15 2015We employ the so-called companion matrix method from computational algebraic geometry, tailored for zero-dimensional ideals, to study the scattering equations. The method renders the CHY-integrand of scattering amplitudes computable using simple linear ... More
The Identity String Field and the Tachyon VacuumMay 02 2001Jun 14 2001We show that the triviality of the entire cohomology of the new BRST operator Q around the tachyon vacuum is equivalent to the Q-exactness of the identity I of the star-algebra. We use level truncation to show that as the level is increased, the identity ... More
Regression-based Hypergraph Learning for Image Clustering and ClassificationMar 14 2016Inspired by the recently remarkable successes of Sparse Representation (SR), Collaborative Representation (CR) and sparse graph, we present a novel hypergraph model named Regression-based Hypergraph (RH) which utilizes the regression models to construct ... More
Atomic hydrogen adsorption and incipient hydrogenation of the Mg(0001) surface: A density-functional theory studyApr 28 2009We investigate the atomic hydrogen adsorption on Mg(0001) by using density-functional theory within the generalized gradient approximation and a supercell approach. The coverage dependence of the adsorption structures and energetics is systematically ... More
Robust Matrix Completion State Estimation in Distribution SystemsFeb 06 2019Due to the insufficient measurements in the distribution system state estimation (DSSE), full observability and redundant measurements are difficult to achieve without using the pseudo measurements. The matrix completion state estimation (MCSE) combines ... More
Pricing Ad Slots with Consecutive Multi-unit DemandAug 06 2013We consider the optimal pricing problem for a model of the rich media advertisement market, as well as other related applications. In this market, there are multiple buyers (advertisers), and items (slots) that are arranged in a line such as a banner ... More
Quark Spin in Proton from Anomalous Ward IndentityApr 15 2015We report a quark spin calculation from the anomalous Ward identity with overlap fermions on 2+1 flavor dynamical fermion configurations with light sea quark masses. Such a formulation decomposes the divergence of the flavor-singlet axial-vector current ... More
Particle-Antiparticle Asymmetries of $Λ$ Production in Hadron-Nucleon CollisionsAug 03 2004The particle-antiparticle asymmetries of $\Lambda$ production in 250 GeV/c $\pi^{\pm}$, $K^{\pm}$, and $p$ --nucleon collisions are studied with two model parametrizations of quark to $\Lambda$ fragmentation functions. It is shown that the available data ... More
Ratio of $\barΛ/Λ$ in Semi-inclusive ElectroproductionFeb 29 2004It is shown that the $\bar{\Lambda}/\Lambda$ cross section ratio in semi-inclusive electroproduction of $\Lambda$ and $\bar{\Lambda}$ hyperons in deep inelastic scattering of charged lepton on a nucleon target, can provide useful information on the quark ... More
Flavor Asymmetry of Nucleon Sea from Detailed BalanceJan 23 2002In this study, the proton is taken as an ensemble of quark-gluon Fock states. Using the principle of detailed balance, we find $\bar{d}-\bar{u} \approx 0.124$, which is in surprisingly agreement with the experimental observation.
Quark Distributions of Octet Baryons from SU(3) SymmetryOct 02 2001SU(3) symmetry relations between the octet baryons are introduced in order to connect both the unpolarized and polarized quark distributions of the octet baryons with those of the nucleon. Two different parametrizations of the nucleon quark distributions ... More
$Λ$, $\barΛ$ Polarization and Spin Transfer in Lepton Deep-Inelastic ScatteringJan 25 2000May 09 2000The flavor and helicity distributions of the $\Lambda$ and $\bar{\Lambda}$ hyperons for both valence and sea quarks are calculated in a perturbative QCD (pQCD) based model. We relate these quark distributions to the fragmentation functions of the $\Lambda$ ... More
Flavor and Spin Structure of Octet Baryons at Large xJul 29 1999May 12 2000The quark flavor and spin distributions in octet baryons are calculated both in the SU(6) quark spectator diquark model and in a perturbative QCD (pQCD) based model. It is shown that the $\Lambda$ has the most significant difference in flavor structure ... More
Heralded entanglement of two distant quantum dot spins via optical interferenceMay 17 2015May 19 2015We present a proposal for heralded entanglement between two quantum dots via Hong--Ou--Mandel effect. Each of the quantum dots, drived off-resonance by two lasers, can be entangled with the coherent cavity mode. The output photons from the two coherent ... More
Toric Duality as Seiberg Duality and Brane DiamondsSep 07 2001Jul 24 2002We use field theory and brane diamond techniques to demonstrate that Toric Duality is Seiberg duality for N=1 theories with toric moduli spaces. This resolves the puzzle concerning the physical meaning of Toric Duality as proposed in our earlier work. ... More
Quiver theories, soliton spectra and Picard-Lefschetz transformationsJun 17 2002Quiver theories arising on D3-branes at orbifold and del Pezzo singularities are studied using mirror symmetry. We show that the quivers for the orbifold theories are given by the soliton spectrum of massive 2d N=2 theory with weighted projective spaces ... More
Towards K-means-friendly Spaces: Simultaneous Deep Learning and ClusteringOct 15 2016Most learning approaches treat dimensionality reduction (DR) and clustering separately (i.e., sequentially), but recent research has shown that optimizing the two tasks jointly can substantially improve the performance of both. The premise behind the ... More
Most Complex Regular Ideal LanguagesOct 31 2015Oct 13 2016A right ideal (left ideal, two-sided ideal) is a non-empty language $L$ over an alphabet $\Sigma$ such that $L=L\Sigma^*$ ($L=\Sigma^*L$, $L=\Sigma^*L\Sigma^*$). Let $k=3$ for right ideals, 4 for left ideals and 5 for two-sided ideals. We show that there ... More
The crossing number of pancake graph $P_4$ is sixNov 20 2012The {\it crossing number} of a graph $G$ is the least number of pairwise crossings of edges among all the drawings of $G$ in the plane. The pancake graph is an important topology for interconnecting processors in parallel computers. In this paper, we ... More
Floquet Quantum Spin Hall Insulator in Cold Atomic SystemsJun 19 2014For cold atomic systems, varying the optical lattice potential periodically provides a general and simple way to drive the system into phases with nontrivial topology. Besides its simplicity, this driving approach, compared to the usual driving approach ... More
A non-boost-invariant solution of relativistic hydrodynamics in 1+3 dimensionsDec 14 2015We present a new solution of relativistic hydrodynamics in 1+3 dimensions which depends on both the transverse coordinate and rapidity. At early times the flow expands dominantly longitudinally in a non-boost-invariant manner, and at late times it expands ... More
The general crossing relation for boundary reflection matrixMay 27 1999In this paper, we give the general crossing relation for boundary reflection matrix $R(\beta)$, which is the extension of the work given by Ghoshal and Zamolodchikov .We also use the first non-trivial extended crossing relation to determine the scaler ... More
Numerical Simulation of Multi-phase Flow in Porous Media on Parallel ComputersJun 02 2016Oct 07 2016A parallel reservoir simulator has been developed, which is designed for large-scale black oil simulations. It handles three phases, including water, oil and gas, and three components, including water, oil and gas. This simulator can calculate traditional ... More
Predictive AdS/QCD Model for Mass Spectra of Mesons with Three FlavorsDec 16 2010Mar 09 2011The predictive soft-wall AdS/QCD model with a modified 5D metric at the infrared region is constructed to obtain a non-trivial dilaton solution for three flavor quarks $u$, $d$ and $s$. Such a model is shown to incorporate both the chiral symmetry breaking ... More
Discovering link communities in complex networks by exploiting link dynamicsMar 19 2013Discovery of communities in complex networks is a fundamental data analysis problem with applications in various domains. Most of the existing approaches have focused on discovering communities of nodes, while recent studies have shown great advantages ... More
LSBN: A Large-Scale Bayesian Structure Learning Framework for Model AveragingOct 18 2012The motivation for this paper is to apply Bayesian structure learning using Model Averaging in large-scale networks. Currently, Bayesian model averaging algorithm is applicable to networks with only tens of variables, restrained by its super-exponential ... More
Transversity from two pion interference fragmentationNov 06 2007Dec 12 2007We present calculation on the azimuthal spin asymmetries for pion pair production in semi-inclusive deep inelastic scattering (SIDIS) process at both HERMES and COMPASS kinematics, with transversely polarized proton, deuteron and neutron targets. We calculate ... More
Quark Structure of $Λ$ from $Λ$-Polarization in Z DecaysJul 05 1999Nov 26 1999The flavor and spin structure for the quark distributions of the $\Lambda$-baryon is studied in a perturbative QCD (pQCD) analysis and in the SU(6) quark-diquark model, and then applied to calculate the $\Lambda$-polarization of semi-inclusive $\Lambda$ ... More
Phenomenological Relation between Distribution and Fragmentation FunctionsAug 13 2002We study the relation between the quark distribution function q(x) and the fragmentation function D_q(z) based on a general form D_q(x) = C(z)z^{alpha}q(z) for valence and sea quarks. By adopting two known parametrizations of quark distributions for the ... More
Azimuthal Spin Asymmetries of Pion ElectroproductionOct 25 2001Azimuthal spin asymmetries, both for charged and neutral pion production in semi-inclusive deep inelastic scattering of unpolarized charged lepton beams on longitudinally and transversely polarized nucleon targets, are analyzed and calculated. Various ... More
The Flavor and Spin Structure of Hyperons from Quark FragmentationAug 29 2000Oct 10 2000We systematically study the hadron longitudinal polarizations of the octet baryons at large $z$ from quark fragmentations in $e^+e^-$-annihilation, polarized charged lepton deep inelastic scattering (DIS) process, and neutrino (antineutrino) DIS process, ... More
Non-perturbative effect in the nucleon structure function and the Gottfried sumJan 13 1996We investigate the non-perturbative effect in the nucleon structure function and the Gottfried sum by using a non-perturbative quark propagator with lowest dimensional condensate contributions from the QCD vacuum. It is shown that the non-perturbative ... More
Dimer Models from Mirror Symmetry and Quivering AmoebaeNov 29 2005Dimer models are 2-dimensional combinatorial systems that have been shown to encode the gauge groups, matter content and tree-level superpotential of the world-volume quiver gauge theories obtained by placing D3-branes at the tip of a singular toric Calabi-Yau ... More
Development of A Platform for Large-scale Reservoir Simulations on Parallel computersFeb 18 2016Oct 07 2016This paper presents our work on designing a platform for large-scale reservoir simulations. Detailed components, such as grid and linear solver, and data structures are introduced, which can serve as a guide to parallel reservoir simulations and other ... More
Cluster Statistics and Quasisoliton Dynamics in Microscopic Car-following ModelsJul 02 2014May 10 2016Using the optimal velocity (OV) model as an example, we show that in the non-linear regime there is an emergent quantity that gives the extremum headways in the cluster formation, as well as the coexistence curve separating the absolute stable phase from ... More
Generalized Pseudopotentials for the Anisotropic Fractional Quantum Hall EffectSep 21 2016Haldane pseudopotentials have played a key role in the study of the fractional quantum Hall (FQH) effect as they allow an arbitrary rotationally-invariant interaction to be expanded over projectors onto the two-particle eigenstates of relative angular ... More
QCD Factorization Based on Six-Quark Operator Effective Hamiltonian from Perturbative QCD and Charmless Bottom Meson Decays $B_{(s)}\to ππ,πK, KK$Oct 20 2008Oct 23 2008The charmless bottom meson decays are systematically investigated based on an approximate six quark operator effective Hamiltonian from perturbative QCD. It is shown that within this framework the naive QCD factorization method provides a simple way to ... More
Charmless $B_s\to PP, PV, VV$ Decays Based on the six-quark Effective Hamiltonian with Strong Phase Effects IIJul 01 2011Mar 13 2012We provide a systematic study of charmless $B_s \to PP, PV, VV$ decays ($P$ and $V$ denote pseudoscalar and vector mesons, respectively) based on an approximate six-quark operator effective Hamiltonian from QCD. The calculation of the relevant hard-scattering ... More
Fast Complex Network Clustering Algorithm Using AgentsMar 24 2013Recently, the sizes of networks are always very huge, and they take on distributed nature. Aiming at this kind of network clustering problem, in the sight of local view, this paper proposes a fast network clustering algorithm in which each node is regarded ... More
Social Politics: Agenda Setting and Political Communication on Social MediaJul 22 2016Social media play an increasingly important role in political communication. Various studies investigated how individuals adopt social media for political discussion, to share their views about politics and policy, or to mobilize and protest against social ... More
Bosonization, Painleve property, exact solutions for N=1 supersymmetric mKdV equationApr 23 2014May 10 2014The N=1 supersymmetric modified Korteweg-de Vries (SmKdV) system is transformed to a system of coupled bosonic equations with the bosonization approach. The bosonized SmKdV (BSmKdV) passes the Painlev\'{e} test and allows a set of B\"{a}cklund transformation ... More
Free boson representation of $DY_{\hbar}(\hat{sl} (M+1|N+1)) $ at level oneMar 21 2001Nov 15 2001We construct a realization of the central extension of super-Yangian double $DY_{\hbar}(\hat{sl}(M+1|N+1))$ at level-one in terms of free boson fields with a continuous parameter.
Study of the branching ratio of $ψ(3770)\to D\bar{D}$ in $e^+e^-\to D\bar{D}$ scatteringOct 22 2009Jan 06 2010Based on the data of BES and Belle, the production of $D\bar{D}$ in the $e^+e^-\to D\bar{D}$ scattering process is studied in this paper. We analyze the continuum and resonant contributions in the energy region from 3.7 to 4.4 GeV. In the $\chi^2$ fit ... More