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Results for "Xiao-Chuan Liu"

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Uniform convergence rate for Birkhoff means of certain uniquely ergodic toral mapsJun 17 2019We obtain estimates on the uniform convergence rate of the Birkhoff average of a continuous observable over torus translations and affine skew product toral transformations. The convergence rate depends explicitly on the modulus of continuity of the observable ... More
On Stable and Unstable Behaviours of Certain Rotation SegmentsMar 20 2019In this paper, we study non-wandering homeomorphisms of the two torus in the identity homotopy class, whose rotation sets are non-trivial line segments from $(0,0)$ to some totally irrational vector $(\alpha,\beta)$. We show this rotation set is in fact ... More
Livsic theorem for diffeomorphism cocyclesNov 06 2017May 06 2018We prove the so called Liv\v{s}ic theorem for cocycles taking values in the group of $C^{1+\beta}-diffeomorphisms of any closed manifold of arbitrary dimension. Since no localization hypothesis is assumed, this result is completely global in the space ... More
How far are the sources of IceCube neutrinos? Constraints from the diffuse TeV gamma-ray backgroundFeb 22 2016May 18 2016The nearly isotropic distribution of the TeV-PeV neutrinos recently detected by IceCube suggests that they come from sources at distance beyond our Galaxy, but how far they are is largely unknown due to lack of any associations with known sources. In ... More
Minimal non-invertible maps on the pseudo-circleOct 17 2018In this article, we show that R.H. Bing's pseudo-circle admits a minimal non-invertible map. This resolves a problem raised by Bruin, Kolyada and Snoha in the negative. The main tool is the Denjoy-Rees technique, further developed by B\'eguin-Crovisier-Le ... More
Prime Ends Dynamics in Parametrised Families of Rotational AttractorsJun 11 2019We provide several new examples in dynamics on the $2$-sphere, with the emphasis on better understanding the induced boundary dynamics of invariant domains in parametrized families. First, motivated by a topological version of the Poincar\'e-Bendixson ... More
Star-forming galaxies as the origin of the IceCube PeV neutrinosDec 29 2014Mar 23 2015Star-forming galaxies, due to their high star-formation rates and hence large number of supernova remnants therein, are huge reservoirs of cosmic rays (CRs). These CRs collide with gases in the galaxies and produce high-energy neutrinos through $pp$ collisions. ... More
Inverse spectral problems for the Sturm-Liouville operator with discontinuityMar 04 2017In this work, we consider the Sturm-Liouville operator on a finite interval $[0,1]$ with discontinuous conditions at $1/2$. We prove that if the potential is known a priori on a subinterval $[b,1]$ with $b\ge1/2$, then parts of two spectra can uniquely ... More
Inverse resonance problems for the Schroedinger operator on the real line with mixed given dataMar 06 2017Sep 13 2017In this work, we study inverse resonance problems for the Schr\"odinger operator on the real line with the potential supported in $[0,1]$. In general, all eigenvalues and resonances can not uniquely determine the potential. (i) It is shown that if the ... More
Efficient Parallel Simulation of Blood Flows in Abdominal AortaJun 10 2019It is known that the maximum diameter for the rupture-risk assessment of the abdominal aortic aneurysm is a generally good method, but not sufficient. Alternative features obtained with computational modeling may provide additional useful criteria. Though ... More
Curvature radius and Kerr black hole shadowApr 16 2019We consider applications of the curvature radius of a Kerr black hole shadow and propose three new approaches to simultaneously determine the black hole spin and inclination angle of the observer. The first one uses only two symmetric characteristic points, ... More
Gain lifetime characterization through time-resolved stimulated emission in a whispering-gallery mode microresonatorOct 09 2018The precise measurement of the gain lifetime at a specific wavelength holds significant importance for understanding the properties of photonic devices and further improving their performances. Here, we show that the evolution of gains can be well characterized ... More
Solvability of the inverse scattering problem for the selfadjoint matrix Schrodinger operator on the half lineMar 04 2017Aug 25 2017In this work we study the inverse scattering problem for the selfadjoint matrix Schrodinger operator on the half line. We provide the necessary and sufficient conditions for the solvability of the inverse scattering problem.
Determination of matrix potential from scattering matrixMar 08 2017Apr 14 2017(i) For the matrix Schr\"{o}dinger operator on the half line, it is shown that if the potential exponentially decreases fast enough then only the scattering matrix uniquely determines the self-adjoint potential and the boundary condition. (ii) For the ... More
Modeling the gamma-ray emission in the Galactic Center with a fading cosmic-ray acceleratorSep 05 2016Dec 19 2016Recent HESS observations of the ~200 pc scale diffuse gamma-ray emission from the central molecular zone (CMZ) suggest the presence of a PeV cosmic-ray accelerator (PeVatron) located in the inner 10 pc region of the Galactic Center. Interestingly, the ... More
Efficient Parallel Simulation of Blood Flows in Abdominal AortaJun 10 2019Sep 06 2019It is known that the maximum diameter for the rupture-risk assessment of the abdominal aortic aneurysm is a generally good method, but not sufficient. Alternative features obtained with computational modeling may provide additional useful criteria. Though ... More
Response delay as a strategy for survival in fluctuating environmentApr 13 2009Response time-delay is an ubiquitous phenomenon in biological systems. Here we use a simple stochastic population model with time-delayed switching-rate conversion to quantitatively study the biological influence of the response time-delay on the survival ... More
Semihierarchical quantum repeaters based on moderate lifetime quantum memoriesJan 20 2017The construction of large-scale quantum networks relies on the development of practical quantum repeaters. Many approaches have been proposed with the goal of outperforming the direct transmission of photons, but most of them are inefficient or difficult ... More
Multiparticle Entanglement Resolution Analyzer based on Quantum-Control-Assisted Uncertainty RelationJan 31 2019We construct a quantum-control-assisted multi-observable variance-based uncertainty relation, and the uncertainty relation obtained indicates that we can prepare a quantum state, in which the measurement results of any observables can be predicted precisely ... More
On paratopological groupsFeb 18 2013In this paper, we firstly construct a Hausdorff non-submetrizable paratopological group $G$ in which every point is a $G_{\delta}$-set, which gives a negative answer to Arhangel'ski\v{\i}\ and Tkachenko's question [Topological Groups and Related Structures, ... More
The mapping $i_{2}$ on the free paratopological groupsJul 20 2015Let $FP(X)$ be the free paratopological group over a topological space $X$. For each non-negative integer $n\in\mathbb{N}$, denote by $FP_{n}(X)$ the subset of $FP(X)$ consisting of all words of reduced length at most $n$, and $i_{n}$ by the natural mapping ... More
An affirmative answer to Yamada's ConjectureJul 02 2018Mar 31 2019In this paper, we give an affirmative answer to Yamada's Conjecture on free topological groups, which was posed in [K. Yamada, {\it Fr\'echet-Urysohn spaces in free topological groups}, Proc. Amer. Math. Soc., {\bf 130}(2002), 2461--2469.].
The $k$-spaces property of free Abelian topological groups over non-metrizable Lašnev spacesApr 18 2016Given a Tychonoff space $X$, let $A(X)$ be the free Abelian topological group over $X$ in the sense of Markov. For every $n\in\mathbb{N}$, let $A_n(X)$ denote the subspace of $A(X)$ that consists of words of reduced length at most $n$ with respect to ... More
Generalized Lüscher Formula in Multi-channel Baryon-Meson ScatteringSep 11 2012Oct 16 2012L\"uscher's formula relates the elastic scattering phase shifts to the two-particle energy levels in a finite cubic box. The original formula was obtained for elastic scattering of two massive spinless particles in the center of mass frame. In this paper, ... More
An arbitrary two-particle high-dimensional Bell state measurement by auxiliary entanglementJan 05 2019Jan 08 2019Bell state measurement (BSM) plays a vital role in quantum information. There are many researches on BSM of qubit Bell state, however, there is no definite solution of how to realize high-dimensional Bell state measurement (HDBSM). In this paper, We present ... More
Beating the channel capacity limit for superdense coding with entangled ququartsJul 27 2018Quantum superdense coding protocols enhance channel capacity by using shared quantum entanglement between two users. The channel capacity can be as high as 2 when one uses entangled qubits. However, this limit can be surpassed by using high-dimensional ... More
Experimental multi-level quantum teleportationApr 28 2019Quantum teleportation provides a way to transmit unknown quantum states from one location to another via previously shared quantum entanglement and classical communications. Discrete variable states and continuous variable states in one degree of freedom ... More
A hybrid LBM-DEM numerical approach with an improved immersed moving boundary method for complex particle-liquid flows involving adhesive particlesJan 28 2019This paper presents a hybrid numerical framework for modelling solid-liquid flow with particle adhesion based on a coupled single-relaxation-time lattice Boltzmann method (LBM) and a discrete element method (DEM) for adhesive particles. The LBM is implemented ... More
Zonal reconstruction of photonic wavefunction via momentum weak measurementSep 04 2019Direct measurement of wave functions has attracted great interests and many different methods have been developed. However, the precision of current techniques is limited by the use of Fourier transform lenses. These measurements require to shear cut ... More
Factorization and Unitarity in Superstring TheoryMar 31 2005Jul 31 2005The overall coefficient of the two-loop 4-particle amplitude in superstring theory is determined by making use of the factorization and unitarity. To accomplish this we computed in detail all the relevant tree and one-loop amplitudes involved and determined ... More
Two-level space-time domain decomposition methods for unsteady inverse problemsAug 25 2015As the number of processor cores on supercomputers becomes larger and larger, algorithms with high degree of parallelism attract more attention. In this work, we propose a novel space-time coupled algorithm for solving an inverse problem associated with ... More
Factorization of the Two Loop Four-Particle Amplitude in Superstring Theory RevisitedDec 02 2004Apr 01 2005We study in detail the factorization of the newly obtained two-loop four-particle amplitude in superstring theory. In particular some missing factors from the scalar correlators are obtained correctly, in comparing with a previous study of the factorization ... More
Indecomposability of entanglement witnesses constructed from any permutationsJun 19 2014Let $n\geq 2$ and $\Phi_{n,t,\pi}: M_n({\mathbb C}) \rightarrow M_n({\mathbb C})$ be a linear map defined by $\Phi_{n,t,\pi}(A)=(n-t)\sum_{i=1}^nE_{ii}AE_{ii}+t\sum_{i=1}^nE_{i,\pi(i)}AE_{i,\pi(i)}^\dag-A$, where $0\leq t\leq n$, $E_{ij}$s are the matrix ... More
A parallel space-time domain decomposition method for unsteady source inversion problemsAug 25 2015In this paper, we propose a parallel space-time domain decomposition method for solving an unsteady source identification problem governed by the linear convection-diffusion equation. Traditional approaches require to solve repeatedly a forward parabolic ... More
Lattice study on kaon nucleon scattering length in the I=1 channelSep 12 2003Nov 14 2003Using the tadpole improved clover Wilson quark action on small, coarse and anisotropic lattices, $KN$ scattering length in the I=1 channel is calculated within quenched approximation. The results are extrapolated towards the chiral and physical kaon mass ... More
Nonlocality from local contextualityMar 27 2016Nov 23 2016We experimentally show that nonlocality can be produced from single-particle contextuality by using two-particle correlations which do not violate any Bell inequality by themselves. This demonstrates that nonlocality can come from an {\em a priori} different ... More
Searching for initial stage of massive star formation around the H II region G18.2-0.3Mar 07 2017Sometimes the early star formation can be found in cold and dense molecular clouds, such as infrared dark cloud (IRDC). Considering star formation often occurs in clustered condition, HII regions may be triggering a new generation of star formation, so ... More
Measurement-device-independent quantification of irreducible high-dimensional entanglementJan 04 2019Apr 08 2019The certification and quantification of entanglement are of great importance in characterizing entangled systems. Recently it is pointed out that the quantum correlation of higher dimensional bipartite states can be simulated with a sequence of lower ... More
I=2 Pion scattering length with improved actions on anisotropic latticesApr 26 2004$\pi\pi$ scattering length in the I=2 channel is calculated within quenched approximation using improved gauge and improved Wilson fermion actions on anisotropic lattices. The results are extrapolated towards the chiral, infinite volume and continuum ... More
Lattice study on kaon pion scattering length in the $I=3/2$ channelMar 28 2004Using the tadpole improved Wilson quark action on small, coarse and anisotropic lattices, $K\pi$ scattering length in the $I=3/2$ channel is calculated within quenched approximation. The results are extrapolated towards the chiral and physical kaon mass ... More
Multiplexed storage and real-time manipulation based on a multiple-degree-of-freedom quantum memoryAug 05 2018Sep 05 2018The faithful storage and coherent manipulation of quantum states with matter-systems enable the construction of large-scale quantum networks based on quantum repeater. To achieve useful communication rates, highly multimode quantum memories will be required ... More
Experimental observation of anomalous trajectories of single photonsApr 20 2017A century after its conception, quantum mechanics still hold surprises that contradict many "common sense" notions. The contradiction is especially sharp in case one consider trajectories of truly quantum objects such as single photons. From a classical ... More
Experimental investigating communication in a superposition of causal ordersNov 19 2018Quantum mechanics allows for the superposition of quantum states, thereby bringing about the great success of quantum communications. Recently, in the so-called quantum switch, the relative orders between quantum operations can also be coherently controlled ... More
Experimental creation of superposition of unknown photonic quantum statesMay 08 2016May 18 2016As one of the most intriguing intrinsic properties of quantum world, quantum superposition provokes great interests in its own generation. Oszmaniec [Phys. Rev. Lett. 116, 110403 (2016)] have proven that though a universal quantum machine that creates ... More
Experimental Ultra-small Longitudinal Phase Estimation via Weak Measurement AmplificationMar 21 2018Weak value amplification has been applied to various small physical quantities estimation, however there still lacks a practical feasible protocol to amplify ultra-small longitudinal phase, which is of importance in high precision measurement. Very recently, ... More
Observation of stronger-than-binary correlations with entangled photonic qutritsDec 18 2017May 05 2018We present the first experimental confirmation of the quantum-mechanical prediction of stronger-than-binary correlations. These are correlations that cannot be explained under the assumption that the occurrence of a particular outcome of an $n \ge 3$-outcome ... More
Discovery of a novel 112-type iron-pnictide and La-doping induced superconductivity in Eu1-xLaxFeAs2 (x = 0 ~ 0.15)Nov 21 2016We report the discovery and characterization of a novel 112-type iron pnictide EuFeAs2, with La-doping induced superconductivity in a series of Eu1-xLaxFeAs2. The polycrystalline samples were synthesized through solid state reaction method only within ... More
Efficient superdense coding in the presence of non-Markovian noiseApr 28 2015Apr 28 2016Many quantum information tasks rely on entanglement, which is used as a resource, for example, to enable efficient and secure communication. Typically, noise, accompanied by loss of entanglement, reduces the efficiency of quantum protocols. We develop ... More
Revisiting the electron-doped SmFeAsO: enhanced superconductivity up to 58.6 K by Th and F codopingNov 15 2017In the iron-based high-Tc bulk superconductors, Tc above 50K was only observed in the electron-doped 1111-type compounds. Here we revisit the electron-doped SmFeAsO polycrystals to make a further investigation for the highest T-c in these materials. To ... More
Quantum Storage of Three-Dimensional Orbital-Angular-Momentum Entanglement in a CrystalDec 17 2014Aug 15 2015Here we present the quantum storage of three-dimensional orbital-angular-momentum photonic entanglement in a rare-earth-ion-doped crystal. The properties of the entanglement and the storage process are confirmed by the violation of the Bell-type inequality ... More
Two-Dimensional Molecular Gas and ongoing star formation around H II region Sh2-104Sep 26 2017We performed a multiwavelength study towards HII region Sh2-104. New maps of 12CO J=1-0 and 13CO J=1-0 were obtained from the Purple Mountain Observatory (PMO) 13.7 m radio telescope. Sh2-104 displays a double-ring structure. The outer ring with a radius ... More
Entanglement detection by violations of noisy uncertainty relations: A proof of principleOct 12 2018Nov 22 2018It is well-known that the violation of a local uncertainty relation can be used as an indicator for the presence of entanglement. Unfortunately, the practical use of these non-linear witnesses has been limited to few special cases in the past. However, ... More
Experimental Realization of Sequential Weak Measurements of Arbitrary Non-commuting Pauli ObservablesMay 06 2018Sequential weak measurements of non-commuting observables is not only fundamentally interesting in quantum measurement but also shown potential in various applications. The previous reported methods, however, can only realize limited sequential weak measurements ... More
Generalized Lüscher's Formula in Multichannel Baryon-Baryon ScatteringJan 22 2014Jan 29 2014In this paper, L\"uscher's formula is generalized to the case of two spin-$\frac{1}{2}$ particles in two-channel scattering based on Ref. \cite{Li:2012bi}. This is first done in a non-relativistic quantum mechanics model and then generalized to quantum ... More
The $k_{R}$-property of free Abelian topological groups and products of sequential fansOct 08 2016Nov 27 2017A space $X$ is called a $k_{R}$-space, if $X$ is Tychonoff and the necessary and sufficient condition for a real-valued function $f$ on $X$ to be continuous is that the restriction of $f$ to each compact subset is continuous. In this paper, we discuss ... More
The topological properties of $q$-spaces in free topological groupsJul 17 2015Sep 21 2015Given a Tychonoff space $X$, let $F(X)$ and $A(X)$ be respectively the free topological group and the free Abelian topological group over $X$ in the sense of Markov. In this paper, we provide some topological properties of $X$ whenever one of $F(X)$, ... More
The $k$-property and countable tightness of free topological vector spacesJun 07 2017Aug 22 2017The free topological vector space $V(X)$ over a Tychonoff space $X$ is a pair consisting of a topological vector space $V(X)$ and a continuous map $i=i_{X}: X\rightarrow V(X)$ such that every continuous mapping $f$ from $X$ to a topological vector space ... More
Graphic Enumerations and Discrete Painlevé Equations via Random Matrix ModelsDec 26 2017We revisit the enumeration problems of random discrete surfaces (RDS) based on solutions of the discrete equations derived from the matrix models. For RDS made of squares, the recursive coefficients of orthogonal polynomials associated with the quartic ... More
Two Particle States and the $S$-matrix Elements in Multi-channel ScatteringApr 25 2005Jun 01 2005Using a quantum mechanical model, the exact energy eigenstates for two-particle two-channel scattering are studied in a cubic box with periodic boundary conditions in all three directions. A relation between the exact energy eigenvalue in the box and ... More
The countable type properties in free paratopological groupsNov 01 2016A space $X$ is of countable type (resp. subcountable type) if every compact subspace $F$ of $X$ is contained in a compact subspace $K$ that is of countable character (resp. countable pseudocharacter) in $X$. In this paper, we mainly show that: (1) For ... More
A note on rectifiable spacesJun 20 2011Oct 07 2011In this paper, we firstly discuss the question: Is $l_{2}^{\infty}$ homeomorphic to a rectifiable space or a paratopological group? And then, we mainly discuss locally compact rectifiable spaces, and show that a locally compact and separable rectifiable ... More
Two Particle States in a Box and the $s$-Matrix in Multi-Channel ScatteringAug 25 2005Aug 29 2005Using a quantum mechanical model, the exact energy eigenstates for two-particle two-channel scattering are studied in a cubic box with periodic boundary conditions. A relation between the exact energy eigenvalue in the box and the two-channel $S$-matrix ... More
Two Particle States in an Asymmetric Box and the Elastic Scattering PhasesApr 01 2004The exact two-particle energy eigenstates in a generic asymmetric rectangular box with periodic boundary conditions in all three directions are studied. Their relation with the elastic scattering phases of the two particles in the continuum are obtained ... More
The $k_{R}$-property on free topological groupsOct 08 2016Jun 07 2017A space $X$ is called a $k_{R}$-space, if $X$ is Tychonoff and the necessary and sufficient condition for a real-valued function $f$ on $X$ to be continuous is that the restriction of $f$ on each compact subset is continuous. In this paper, we mainly ... More
Two Weak Forms of Countability Axioms in Free Topological GroupsJul 15 2015Apr 18 2016Given a Tychonoff space $X$, let $F(X)$ and $A(X)$ be respectively the free topological group and the free Abelian topological group over $X$ in the sense of Markov. For every $n\in\mathbb{N}$, let $F_{n}(X)$ (resp. $A_n(X)$) denote the subspace of $F(X)$ ... More
Some aspects of simulation algorithms for dynamical fermionsApr 17 1996Three topics concerning fermion simulation algorithms are discussed: 1.) A performance comparison of the multiboson technique to simulate dynamical fermions and the Kramers equation algorithm, 2.) the question of reversibility in the Hybrid Monte Carlo ... More
Performance Tests of the Kramers Equation and Boson Algorithms for Simulations of QCDDec 12 1995We present a performance comparison of the Kramers equation and the boson algorithms for simulations of QCD with two flavors of dynamical Wilson fermions and gauge group $SU(2)$. Results are obtained on $6^312$, $8^312$ and $16^4$ lattices. In both algorithms ... More
The rational parts of one-loop QCD amplitudes III: The six-gluon caseJul 03 2006Sep 11 2006The rational parts of 6-gluon one-loop amplitudes with scalars circulating in the loop are computed by using the newly developed method for computing the rational parts directly from Feynman integrals. We present the analytic results for the two MHV helicity ... More
Estimates of complex eigenvalues and an inverse spectral problem for the transmission eigenvalue problemMar 06 2017Sep 13 2017This work deals with the interior transmission eigenvalue problem: $y'' + {k^2}\eta \left( r \right)y = 0$ with boundary conditions ${y\left( 0 \right) = 0 = y'\left( 1 \right)\frac{{\sin k}}{k} - y\left( 1 \right)\cos k},$ where the function $\eta(r)$ ... More
The rational parts of one-loop QCD amplitudes I: The general formalismJul 03 2006Sep 11 2006A general formalism for computing only the rational parts of oneloop QCD amplitudes is developed. Starting from the Feynman integral representation of the one-loop amplitude, we use tensor reduction and recursive relations to compute the rational parts ... More
Interacting Valley Chern Insulator and its Topological Imprint on Moiré SuperconductorsJun 17 2019One salient feature of systems with Moir\'{e} superlattice is that, Chern number of "minibands" originating from each valley of the original graphene Brillouin zone becomes a well-defined quantized number because the miniband from each valley can be isolated ... More
SSthreshless Start: A Sender-Side TCP Intelligence for Long Fat NetworkJan 28 2014Measurement shows that 85% of TCP flows in the internet are short-lived flows that stay most of their operation in the TCP startup phase. However, many previous studies indicate that the traditional TCP Slow Start algorithm does not perform well, especially ... More
The rational parts of one-loop QCD amplitudes II: The five-gluon caseJul 03 2006Sep 11 2006The rational parts of 5-gluon one-loop amplitudes are computed by using the newly developed method for computing the rational parts directly from Feynman integrals. We found complete agreement with the previously well-known results of Bern, Dixon and ... More
Two-step Quantum Key Distribution Schemes Using Polarization and Frequency Doubly Entangled PhotonsOct 06 2007A two-step quantum key distribution protocol using frequency and polarization doubly entangled photons is proposed. In this protocol, information is encoded by a unitary operation on each of the two doubly entangled photons and sent from Alice to Bob ... More
The Analytical One-Loop Contributions to Higgs Boson Mass in the Supersymmetric Standard Model with Vector-like ParticlesJun 16 2015Jun 25 2015In the Minimal Supersymmetric Standard Model (MSSM) with additional vector-like particles (VLPs), we for the first time derive the particle mass spectra and the Feynman rules, as well as analytically calculate the one-loop contributions to the Higgs boson ... More
Quenched Charmed Meson Spectra using Tadpole Improved Quark Action on Anisotropic LatticesMay 11 2005Charmed meson charmonium spectra are studied with improved quark actions on anisotropic lattices. We measured the pseudo-scalar and vector meson dispersion relations for 4 lowest lattice momentum modes with quark mass values ranging from the strange quark ... More
A Numerical Study of Improved Quark Actions on Anisotropic LatticesDec 22 2004Mar 03 2005Tadpole improved Wilson quark actions with clover terms on anisotropic lattices are studied numerically. Using asymmetric lattice volumes, the pseudo-scalar meson dispersion relations are measured for 8 lowest lattice momentum modes with quark mass values ... More
Coupled Wire description of the Correlated Physics in Twisted Bilayer GrapheneNov 20 2018Apr 10 2019Since the discovery of superconductivity and correlated insulator at fractional electron fillings in the twisted bilayer graphene, most theoretical efforts have been focused on describing this system in terms of an effective extended Hubbard model. However, ... More
Lattice models for Non-Fermi Liquids with Tunable Transport ScalingsFeb 26 2019A variety of exotic non-fermi liquid (NFL) states have been observed in many condensed matter systems, with different scaling relations between transport coefficients and temperature. The "standard" approach to studying these NFLs is by coupling a Fermi ... More
More on volume dependence of spectral weight functionMay 31 2010Spectral weight functions are easily obtained from two-point correlation functions and they might be used to distinguish single-particle from multi-particle states in a finite-volume lattice calculation, a problem crucial for many lattice QCD simulations. ... More
Reentrant quantum anomalous Hall effect with in-plane magnetic fields in HgMnTe quantum wellsMay 09 2013May 10 2013Quantum anomalous Hall effect has been predicted in HgMnTe quantum wells with an out-of-plane magnetization of Mn atoms. However, since HgMnTe quantum wells are paramagnetic, an out-of-plane magnetic field is required to polarize magnetic moments of Mn ... More
In-plane Magnetization Induced Quantum Anomalous Hall EffectJan 21 2013In a two-dimensional electron gas, the quantized Hall conductance can be induced by a strong magnetic field, known as the quantum Hall effect, and it can also result from the strong exchange coupling of magnetic ions, dubbed as the "quantum anomalous ... More
Electron Acceleration in Middle-age Shell-type $γ$-Ray Supernova RemnantsMay 05 2019Over the past decade, $\gamma$-ray observations of supernova remnants (SNRs) and accurate cosmic-ray (CR) spectral measurements have significantly advanced our understanding of particle acceleration in SNRs. In combination with multiwavelength observations ... More
Intrinsic nature of the Stein-Weiss $H^1$-inequalityApr 08 2019May 14 2019This paper explores the intrinsic nature of the celebrated Stein-Weiss $H^1$-inequality $$ \|I_s u\|_{L^\frac{n}{n-s}}\lesssim \|u\|_{L^1}+\|\vec{R}u\|_{L^{1}}=\|u\|_{H^1} $$ through the tracing and duality laws based on Riesz's singular integral operator ... More
Radially Excited States of 1P Charmonia and X(3872)Jan 25 2007Jul 18 2008The excited states of charmonia are numerically investigated in quenched lattice QCD with improved gauge and Wilson fermion actions formulated on anisotropic lattices. Through a constrained curve fitting algorithm, the masses of the first excited states ... More
D1-D3 (or $\bar{\textrm{D}3}$) Systems with FluxesJun 22 2008Jun 29 2008In this article we study D1-D3 (or $\bar{\textrm{D}3}$) brane systems with generic constant electric and magnetic fluxes in IIB string theory. We work out all possible supersymmetric configurations and find out via T-duality all of them and corresponding ... More
Operational Resource Theory of Quantum ChannelsApr 04 2019May 19 2019Quantum resource theories have been widely studied to systematically characterize the non-classicality of quantum systems. Most resource theories focus on quantum states and study the interconversion between different states. Although quantum channels ... More
On electromagnetic scattering from a penetrable cornerNov 14 2016This article is concerned with the time-harmonic electromagnetic (EM) scattering from a generic inhomogeneous medium. It is shown that if there is a right corner on the support of the medium, then it scatters every pair of incident EM fields, excluding ... More
Decoupling Elastic Waves and Its ApplicationsSep 13 2015In this paper, we consider time-harmonic elastic wave scattering governed by the Lam\'e system. It is known that the elastic wave field can be decomposed into the shear and compressional parts, namely, the pressure and shear waves that are generally coexisting, ... More
Tiny Graviton Matrix Theory On Time-Dependent BackgroundAug 27 2008Dec 20 2008In this article we construct a tiny graviton matrix model for type IIB string theory on a plane-wave background with null dilaton. For the linear null dilaton case, we analyze its vacuum and the excitation spectrum around the vacuum, and discuss the time-dependent ... More
The Helicity Amplitude for $1/2$ and $3/2^+$ Baryon in the Pseudo-Meson Photoproduction in the Quark ModelJan 21 2015Aug 21 2015We derive the separate helicity amplitudes involving the partial wave analysis in the process of pseudo-scalar meson photon productions with $J^P=3/2^+$, which is independent on model. According to parity, the general amplitude in the case of $J^P=1/2^-$ ... More
Rank-one Characterization of Joint Spectral Radius of Finite Matrix FamilySep 07 2011Dec 29 2016In this paper we study the joint/generalized spectral radius of a finite set of matrices in terms of its rank-one approximation by singular value decomposition. In the first part of the paper, we show that any finite set of matrices with at most one element's ... More
Minimal submanifolds in certain types of kaehler product manifoldDec 20 2016Jan 05 2017Let $M$ be a real $l$-dimensional minimal submanifold with flat normal connection in a kaehler product manifold $\overline{M}^m\times \overline{M}^n$ where $\overline{M}^m$ and $\overline{M}^n$ are complex $m$-dimensional and complex $n$-dimensional kaehler ... More
Massive Domain Wall Fermions on Four-dimensional Anisotropic LatticesJul 17 2006Jul 27 2006We formulate the massive domain wall fermions on anisotropic lattices. For the massive domain wall fermion, we find that the dispersion relation assumes the usual form in the low momentum region when the bare parameters are properly tuned. The quark self-energy ... More
Dynamical Dimension Change in Supercritical String TheorySep 07 2004Sep 07 2004We study tree-level solutions to heterotic string theory in which the number of spacetime dimensions 10+n changes dynamically due to closed string tachyon condensation. Taking the large-n limit, we compute the amount by which the dilaton gradient changes ... More
Modular invariants and singularity indices of hyperelliptic fibrationsMay 06 2016The modular invariants of a family of semistable curves are the degrees of the corresponding divisors on the image of the moduli map. The singularity indices were introduced by G. Xiao to classify singular fibers of hyperelliptic fibrations and to compute ... More
Resonance identity and multiplicity of non-contractible closed geodesics on Finsler $\mathbb{R}P^{n}$Jul 10 2016Jul 31 2017In this paper, we establish first the resonance identity for non-contractible homologically visible prime closed geodesics on Finsler $n$-dimensional real projective space $(\mathbb{R}P^n,F)$ when there exist only finitely many distinct non-contractible ... More
Rank-one Characterization of Joint Spectral Radius of Finite Matrix FamilySep 07 2011Jan 04 2013In this paper we study the joint/generalized spectral radius of a finite set of matrices in terms of its rank-one approximation by singular value decomposition. In the first part of the paper, we show that any finite set of matrices with at most one element's ... More
How to understand the underlying structures of $X(4140)$, $X(4274)$, $X(4500)$ and $X(4700)$Jul 05 2016We investigate the possible rescattering effects which may contribute to the process $B^+\to J/\psi\phi K^+$. It is shown that the $D_{s}^{*+}D_{s}^-$ rescattering via the open-charmed meson loops, and $\psi^\prime \phi$ rescattering via the $\psi^\prime ... More
Local electronic structures on the superconducting interface $LaAlO_{3}/SrTiO_{3}$Mar 23 2010Apr 14 2010Motivated by the recent discovery of superconductivity on the heterointerface $LaAlO_{3}/SrTiO_{3}$, we theoretically investigate its local electronic structures near an impurity considering the influence of Rashba-type spin-orbit interaction (RSOI) originated ... More