Twisted SUSY Invariant Formulation of Chern-Simons Gauge Theory on a Lattice (2008)
Nagata, Kazuhiro, Wu, Yong-Shi
We propose a twisted SUSY invariant formulation of Chern-Simons theory on a Euclidean three dimensional lattice. The SUSY algebra to be realized on the lattice is the N=4 D=3 twisted algebra that was...
From Extraspecial Two-Groups To GHZ States (2007)
Zhang, Yong, Rowell, Eric C., Wu, Yong-Shi, Wang, Zhenghan, Ge, Mo-Lin
In this paper we explore natural connections among extraspecial 2-groups, almost-complex structures, unitary representations of the braid group and the Greenberger-Horne-Zeilinger (GHZ) states. We...
Quantized spin Hall effect in Helium three-A and other p-wave paired Fermi systems (2006)
Goryo, Jun, Kohmoto, Mahito, Wu, Yong-Shi
In this paper we propose the quantized spin Hall effect (SHE) in the vortex state of a rotating p-wave paired Fermi system in an inhomogeneous magnetic field and in a weak periodic potential. It is...
Distribution of spectral-flow gaps in the Rashba model with disorder: a new universality (2006)
Tobe, Daijiro, Kohmoto, Mahito, Sato, Masatoshi, Wu, Yong-Shi
We report a study of disordered electron systems with spin-orbit coupling on a cylinder using methods of random matrix ensembles. With a threading flux turned on, the single particle levels will...
BPS R-balls in N=4 SYM on R X S^3, Quantum Hall Analogy and AdS/CFT Holography (2006)
Dai, Jian, Wang, Xiao-Jun, Wu, Yong-Shi
In this paper, we propose a new approach to study the BPS dynamics in N=4 supersymmetric U(N) Yang-Mills theory on R X S^3, in order to better understand the emergence of gravity in the gauge theory....
Braid Group, Gauge Invariance and Topological Order (2006)
Sato, Masatoshi, Kohmoto, Mahito, Wu, Yong-Shi
Topological order in two-dimensional systems is studied by combining the braid group formalism with a gauge invariance analysis. We show that flux insertions (or large gauge transformations)...
Qi, Xiao-Liang, Wu, Yong-Shi, Zhang, Shou-Cheng
We prove a general theorem on the relation between the bulk topological quantum number and the edge states in two dimensional insulators. It is shown that whenever there is a topological order in...
Exact Solution for a Two-Level Atom in Radiation Fields and the Freeman Resonances (2005)
Guo, Dong-Sheng, Wu, Yong-Shi, Van Woerkom, Linn
Using techniques of complex analysis in an algebraic approach, we solve the wave equation for a two-level atom interacting with a monochromatic light field exactly. A closed-form expression for the...
Dynamics of Giant-Gravitons in the LLM geometry and the Fractional Quantum Hall Effect (2005)
Dai, Jian, Wang, Xiao-Jun, Wu, Yong-Shi
The LLM's 1/2 BPS solutions of IIB supergravity are known to be closely related to the integer quantum Hall droplets with filling factor $\nu=1$, and the giant gravitons in the LLM geometry behave...
Qi, Xiao-Liang, Wu, Yong-Shi, Zhang, Shou-Cheng
We propose models of two dimensional paramagnetic semiconductors where the intrinsic spin Hall effect is exactly quantized in integer units of a topological charge. The model describes a topological...
A Wave Function Describing Superfluidity in a Perfect Crystal (2005)
We propose a many-body wave function that exhibits both diagonal and off-diagonal long-range order. Incorporating short-range correlations due to interatomic repulsion, this wave function is shown to...
Open Spin Chain and Open Spinning String (2004)
Chen, Bin, Wang, Xiao-Jun, Wu, Yong-Shi
In this letter, we study the open spinning strings and their SYM duals. A new class of folded open spinning strings is found. At planar one-loop level in SYM, by solving the thermodynamic limit of...
With the deconstruction technique, the geometric information of a torus can be encoded in a sequence of orbifolds. By studying the Matrix Theory on these orbifolds as quiver mechanics, we present a...
Kuang, Le-Man, Chen, Guang-Hong, Wu, Yong-Shi
We study linear and nonlinear optical properties of electromagnetically induced transparency (EIT) medium interacting with two quantized laser fields for adiabatic EIT case. We show that EIT medium...
Integrable Open Spin Chain in Super Yang-Mills and the Plane-wave/SYM duality (2004)
Chen, Bin, Wang, Xiao-Jun, Wu, Yong-Shi
We investigate the integrable structures in an N=2 superconfomal Sp(N) Yang-Mills theory with matter, which is dual to an open+closed string system. We restrict ourselves to the BMN operators that...
Quiver Matrix Mechanics for IIB String Theory (I): Wrapping Membranes and Emergent Dimension (2003)
In this paper we present a discrete, non-perturbative formulation for type IIB string theory. Being a supersymmetric quiver matrix mechanics model in the framework of M(atrix) theory, it is a...
Integrable Spin Chain and Operator Mixing in N=1,2 Supersymmetric Theories (2003)
We study operator mixing, due to planar one-loop corrections, for composite operators in D=4 supersymmetric theories. We present some N=1,2 Yang-Mills and Wess-Zumino models, in which the planar...
Quiver Mechanics for Deconstructed Matrix String (2003)
In this paper we propose a quiver model of matrix quantum mechanics with 8 supercharges which, on a Higgs branch, deconstructs the worldsheet of Matrix String Theory. This discrete model evades the...
Quantum phase transition and engineering in two-component BEC in optical lattices (2003)
In this paper we review recent progress in studying quantum phase transitions in one- and two-component Bose-Einstein condensates (BEC) in optical lattices. These phase transitions involve the...
Quantum Field Theories on a Noncommutative Euclidean Space: Overview of New Physics (2003)
In this talk I briefly review recent developments in quantum field theories on a noncommutative Euclidean space, with Heisenberg-like commutation relations between coordinates. I will be concentrated...
Perturbative Formulation and Non-adiabatic Corrections in Adiabatic Quantum Computing Schemes (2003)
Adiabatic limit is the presumption of the adiabatic geometric quantum computation and of the adiabatic quantum algorithm. But in reality, the variation speed of the Hamiltonian is finite. Here we...
Moyal Representation of the String Field Star Product in the Presence of a B-background (2002)
Wu, Yong-shi, Zhuang, Ting-liang
In this paper we show that in the presence of an anti-symmetric tensor $B$-background, Witten's star algebra for open string fields persists to possess the structure of a direct product of commuting...
Bosonization and phase Diagram of the one-dimensional t-J model (2002)
Chen, Guang-Hong, Wu, Yong-Shi
We present an analytic study of the phase diagram of the one-dimensional t-J model and a couple of its cousins. To deal with the interactions induced by the no double occupancy constraints, we...
On Gauge Invariance of Noncommutative Chern-Simons Theories (2001)
Chen, Guang-Hong, Wu, Yong-Shi
Motivated by possible applications to condensed matter systems, in this paper we construct U(N) noncommutative Chern-Simons (NCCS) action for a disc and for a double-layer geometry, respectively. In...
Chen, Guang-Hong, Wu, Yong-Shi
A one-loop renormalization group (RG) analysis is performed for noncommutative Landau-Ginsburg theory in an arbitrary dimension. We adopt a modern version of the Wilsonian RG approach, in which a...
Giant non-linearities accompanying electromagnetically induced transparency (2001)
Kuang, Le-Man, Chen, Guang-Hong, Wu, Yong-Shi
We develop a fully quantum treatment of electromagnetically induced transparency (EIT) in a vapor of three-level $\Lambda$-type atoms. Both the probe and coupling lasers with arbitrary intensities...
On Critical Phenomena in a Noncommutative Space (2001)
Chen, Guang-Hong, Wu, Yong-Shi
In this paper we demonstrate that coordinate noncommutativity at short distances can show up in critical phenomena through UV-IR mixing. In the symmetric phase of the Landau-Ginsburg model,...
OM Theory and V-duality (2001)
Cai, Rong-Gen, Ohta, Nobuyoshi, Lu, Jianxin, Roy, Shibaji, Wu, Yong-Shi
We show that the (M5, M2, M 2′, MW) bound state solution of eleven-dimensional supergravity recently constructed in hep-th/0009147 is related to the (M5, M2) bound state one by a finite Lorentz...
One-loop Shift in Noncommutative Chern-Simons Coupling (2000)
Chen, Guang-Hong, Wu, Yong-Shi
In this paper we study the one-loop shift in the coupling constant in a noncommutative pure U(N) Chern-Simons gauge theory in three dimensions. The one-loop shift is shown to be a constant...
Comments on Noncommutative Open String Theory: V-duality and Holography (2000)
Chen, Guang-Hong, Wu, Yong-Shi
In this paper we study the interplay of electric and magnetic backgrounds in determining the decoupling limit of coincident D-branes towards a noncommutative Yang-Mills (NCYM) or open string (NCOS)...
The c-Functions of Noncommutative Yang-Mills Theory from Holography (2000)
In this paper we study non-commutative Yang-Mills theory (NCYM) through its gravity dual. First it is shown that the gravity dual of an NCYM with self-dual $\theta$-parameters has a Lagrangian in the...
Wu, Yong-Shi, Yu, Yue, Yang, Huan-Xiong
We develop a bosonization approach to study the low temperature properties of one-dimensional gas of particles obeying fractional exclusion statistics (FES). It is shown that such ideal gas...
The c-Function of Noncommutative Yang-Mills Theory from Holography (1999)
See hep-th/0005054.
Yu, Yue, Yang, Huan-Xiong, Wu, Yong-Shi
We develop a bosonization approach for one-dimensional models based on Bethe ansatz equations. The operator formalism of the exact soluble models in the low energy limit provides a systematic method...
Holography and Noncommutative Yang-Mills (1999)
In this note a lately proposed gravity dual of noncommutative Yang-Mills theory is derived from the relations, recently suggested by Seiberg and Witten, between closed string moduli and open string...
Does spin-orbit coupling play a role in metal-nonmetal transition in two-dimensional systems? (1999)
Chen, Guang-Hong, Raikh, M. E., Wu, Yong-Shi
We propose an experiment, which would allow to pinpoint the role of spin-orbit coupling in the metal-nonmetal transition observed in a number of two-dimensional systems at low densities. Namely, we...
Near-Horizon Virasoro Symmetry and the Entropy of de Sitter Space in Any Dimension (1999)
De Sitter spacetime is known to have a cosmological horizon that enjoys thermodynamic-like properties similar to those of a black hole horizon. In this note we show that a universal argument can be...
Matrix Compactification On Orientifolds (1998)
Generalizing previous results for orbifolds, in this paper we describe the compactification of Matrix model on an orientifold which is a quotient space as a Yang-Mills theory living on a quantum...
Guo, Dong-Sheng, Freeman, R. R., Wu, Yong-Shi
The ordinary Schrodinger equation with minimal coupling for a nonrelativistic electron interacting with a single-mode photon field is not satisfied by the nonrelativistic limit of the exact solutions...
Resonant Above-Threshold Ionization Peaks at Quantized Intensities (1998)
Gao, J., Guo, Dong-Sheng, Wu, Yong-Shi
We suggest that electron-laser interactions can give rise to resonance phenomena as the intensity varies. A new QED perturbation theory is developed, in which the coupling between an electron and the...
Noncommutative Gauge Theories in Matrix Theory (1998)
We present a general framework for Matrix theory compactified on a quotient space R^n/G, with G a discrete group of Euclidean motions in R^n. The general solution to the quotient conditions gives a...
Towards a Noncommutative Geometric Approach to Matrix Compactification (1997)
Ho, Pei-Ming, Wu, Yi-Yen, Wu, Yong-Shi
In this paper we study generic M(atrix) theory compactifications that are specified by a set of quotient conditions. A procedure is proposed, which both associates an algebra to each compactification...
Brane Creation in M(atrix) Theory (1997)
We discuss, in the context of M(atrix) theory, the creation of a membrane suspendend between two longitudinal five-branes when they cross each other. It is shown that the membrane creation is closely...
Master Ward Identity for Nonlocal Symmetries in D=2 Principal Chiral Models (1997)
We derive, in path integral approach, the (anomalous) master Ward identity associated with an infinite set of nonlocal conservation laws in two-dimensional principal chiral models
P-P' Strings in M(atrix) Theory (1997)
Ho, Pei-Ming, Li, Miao, Wu, Yong-Shi
We study the off-diagonal blocks in the M(atrix) model that are supposed to correspond to open strings stretched between a Dp-brane and a Dp'-brane. It is shown that the spectrum, including the...
IIB/M Duality and Longitudinal Membranes in M(atrix) Theory (1997)
In this paper we study duality properties of the M(atrix) theory compactified on a circle. We establish the equivalence of this theory to the strong coupling limit of type IIB string theory...
Noncommutative Geometry and D-Branes (1996)
We apply noncommutative geometry to a system of N parallel D-branes, which is interpreted as a quantum space. The Dirac operator defining the quantum differential calculus is identified to be the...
Mutual Exclusion Statistics Between Quasiparticles in the Fractional Quantum Hall Effect (1996)
Su, Wu-Pei, Wu, Yong-Shi, Yang, Jian
In this paper we propose a new assignment for mutual exclusion statistics between quasielectrons and quasiholes in the fractional quantum Hall effect. In addition to providing numerical evidence for...
Mean-Field and Perturbation Theory of Vortex-like Composite Fermions (1996)
We develop a field theory for a partially filled Landau level based on composite fermions with a finite vortex core, whose mean-field states are exactly those described by well-tested trial wave...
Hatsugai, Yasuhiro, Kohmoto, Mahito, Koma, Tohru, Wu, Yong-Shi
We study statistical characterization of the many-body states in the exactly solvable model with internal degree of freedom in more than one dimension. The model exhibits the Mott metal-insulator...
Hidden Massive Spectators in the Effective Field Theory for Integral Quantum Hall Transitions (1995)
Hatsugai, Yasuhiro, Kohmoto, Mahito, Wu, Yong-Shi
Integral quantum Hall plateau transitions in a planar lattice system due to gap collapse can be described by an effective field theory with Dirac fermions. We discuss how to reproduce the correct...
Bosonization of One-Dimensional Exclusons and Characterization of Luttinger Liquids (1995)
We achieve a bosonization of one-dimensional ideal gas of exclusion statistics $\lambda$ at low temperatures, resulting in a new variant of $c=1$ conformal field theory with compactified radius...
Explicit Solutions of the Bethe Ansatz Equations for Bloch Electrons in a Magnetic Field (1994)
Hatsugai, Yasuhiro, Kohmoto, Mahito, Wu, Yong-Shi
For Bloch electrons in a magnetic field, explicit solutions are obtained at the center of the spectrum for the Bethe ansatz equations recently proposed by Wiegmann and Zabrodin. When the magnetic...
Algebraic and geometric aspects of generalized quantum dynamics (1994)
\noindent We briefly discuss some algebraic and geometric aspects of the generalized Poisson bracket and non--commutative phase space for generalized quantum dynamics, which are analogous to...
A Note on Statistical Interactions and the Thermodynamic Bethe Ansatz (1994)
We show that the thermodynamic Bethe ansatz equations for one-dimensional integrable many-body systems can be reinterpreted in such a way that they only code the statistical interactions, in the...
Statistical Distribution of Particles obeying Fractional Statistics (1994)
Misprints in eq. (7), which propagate up to eq. (13), are corrected. References are updated.
Chiral Operator Product Algebra and Edge Excitations of a Fractional Quantum Hall Droplet (1993)
Wen, Xiao-Gang, Wu, Yong-Shi, Hatsugai, Yasuhiro
In this paper we study the spectrum of low-energy edge excitations of a fractional quantum Hall (FQH) droplet. We show how to generate, by conformal field theory (CFT) techniques, the many-electron...
Chiral Operator Product Algebra Hidden in Certain Fractional Quantum Hall Wave Functions (1993)
In this paper we study the conditions under which an N-electron wave function for a fractional quantum Hall (FQH) state can be viewed as N-point correlation function in a conformal field theory...
Mott Transition in An Anyon Gas (1993)
Chen, Wei, Fisher, Matthew P. A., Wu, Yong-Shi
We introduce and analyze a lattice model of anyons in a periodic potential and an external magnetic field which exhibits a transition from a Mott insulator to a quantum Hall fluid. The transition is...
We give a unified description of our recent results on the the inter-relationship between the integrable infinite KP hierarchy, nonlinear $\hat{W}_{\infty}$ current algebra and conformal noncompact...
In this paper we study the inter-relationship between the integrable KP hierarchy, nonlinear $\hat{W}_{\infty}$ algebra and conformal noncompact $SL(2,R)/U(1)$ coset model at the classical level. We...
This paper is devoted to constructing a quantum version of the famous KP hierarchy, by deforming its second Hamiltonian structure, namely the nonlinear $\hat{W}_{\infty}$ algebra. This is achieved by...
We determine explicitly all structure constants of the whole chiral BRST cohomology ring in $D=2$ string theory including both the discrete states and tachyon states. This is made possible by...
Two-Loop Analysis of Non-abelian Chern-Simons Theory (1992)
Chen, Wei, Semenoff, Gordon W., Wu, Yong-Shi
Perturbative renormalization of a non-Abelian Chern-Simons gauge theory is examined. It is demonstrated by explicit calculation that, in the pure Chern-Simons theory, the beta-function for the...
The conformal non-compact $SL(2,R)/U(1)$ coset model in two dimensions has been recently shown to embody a nonlinear $\hat{W}_\infty$ current algebra, consisting of currents of spin $\geq 2$...
Nonlinear $\hat{W}_{\infty}$ Current Algebra in the SL(2,R)/U(1) Coset Model (1991)
Previously we have established that the second Hamiltonian structure of the KP hierarchy is a nonlinear deformation, called $\hat{W}_{\infty}$, of the linear, centerless $W_{\infty}$ algebra. In this...
A new quantum group associated with a ‘nonstandard’ braid group representation (1991)
Jing, Naihuan, Ge, Mo-Lin, Wu, Yong-Shi
A new quantum group is derived from a ‘nonstandard’ braid group representation by employing the Faddeev-Reshetikhin-Takhtajan constructive method. The classical limit is not a Lie superalgebra,...