195 citations · 1.7k across the 52 of their papers we have counts for
53 papers
Universal Drude Weights in One-dimensional Repulsive Fermi Gas
Xiangguo Yin, Dawei Niu, Shuang Zhang +3
Building on the Bethe ansatz and generalized hydrodynamics, we rigorously establish universal relations between Drude weights governing charge, spin, and energy transport and therm…
Universal Transport Properties of Continuous Quantum Gases
Zi-yang Liu, Xiangguo Yin, Yunbo Zhang +2
The Drude weight characterizes ballistic transport in quantum many-body systems. Although analytical calculations of Drude weights have been extensively studied in integrable model…
Structure of the mean-field yrast spectrum of a two-component Bose gas in a ring: role of interaction asymmetry
Hui Tang, Guan-Hua Huang, Shizhong Zhang +2
The mean-field yrast spectrum of an SU(2)-symmetric two-component Bose gas confined to a ring geometry is known to exhibit an intricate nonanalytic structure that is absent in sing…
Generalized Onsager reciprocal relations of charge and spin transport
Guan-Hua Huang, Hui Tang, Shizhong Zhang +2
In spin-orbit-coupled systems the charge and spin transport are generally coupled to each other, namely a charge current will induce a spin current and vice versa. In the presence…
Unconventional spin Hall effect in PT symmetric spin-orbit coupled quantum gases
Hui Tang, Guan-Hua Huang, Shizhong Zhang +2
We theoretically study the intrinsic spin Hall effect in PT symmetric, spin-orbit coupled quantum gases confined in an optical lattice. The interplay of the PT symmetry and the spi…
Observation of Brownian Motion of a Bose-Einstein Condensate
Xiao-Qiong Wang, Rui-Lang Zeng, Zi-Yao Zhang +4
We report on the experimental observation of classical Brownian motion in momentum space by a Bose-Einstein condensate (BEC) of Rubidium atoms prepared in a hexagonal optical latti…
Persistent breather and dynamical symmetry in a unitary Fermi gas
Dali Sun, Jing Min, Xiangchuan Yan +8
SO(2,1) dynamical symmetry makes a remarkable prediction that the breathing oscillation of a scale invariant quantum gas in an isotropic harmonic trap is isentropic and can persist…
Nonlinear spin dynamics induced by feedback under continuous Larmor frequency distributions
Tishuo Wang, Zhihuang Luo, Shizhong Zhang +1
Nonlinear spin dynamics are essential in exploring nonequilibrium quantum phenomena and have broad applications in precision measurement. Among these systems, the combination of a…
Emergent -wave interactions in orbitally active quasi-two-dimensional Fermi gases
Colin J. Dale, Kevin G. S. Xie, Kiera Pond Grehan +3
We investigate the scattering properties and bound states of a quasi-two-dimensional (q2D) spin-polarized Fermi gas near a -wave Feshbach resonance. Strong confinement promotes…
Radio-Frequency Spectroscopy and the Dimensional Crossover in Interacting Spin-Polarized Fermi Gases
Jeff Maki, Colin J. Dale, Joseph H. Thywissen +1
Low-dimensional ultracold gases are created in the laboratory by confining three-dimensional (3D) gases inside highly anisotropic trapping potentials. Such trap geometries not only…
Hydrodynamic equations for a U(N) invariant superfluid
Yi-Cai Zhang, Shizhong Zhang
In this paper, we develop the appropriate set of hydrodynamic equations in a U(N) invariant superfluid that couple the dynamics of superflow and magnetization. In the special case…
Fragmented Condensate in a Two-Component Bose Gas with -wave Interactions
Mingyang Liu, Shizhong Zhang
In this Letter, we discuss the effects of -wave attractive interaction in a spin- Bose gas. With a repulsive -wave background interaction, we show that for weak -wave…
Feedback-Induced Nonlinear Spin Dynamics in an Inhomogeneous Magnetic Field
Tishuo Wang, Zhihuang Luo, Shizhong Zhang +1
Nonlinear effects are the root of interesting phenomena such as masers and lasers, and play a significant role in science and engineering. In spin systems, nonlinear spin dynamics…
Viscous Flow in a 1D Spin-Polarized Fermi Gas: the Role of Integrability on Viscosity
Jeff Maki, Shizhong Zhang
The transport properties of one-dimensional Fermi gases at low-temperatures are often described by the Luttinger liquid (LL) model. However, to study dissipation one needs to exami…
Emergent s-wave interactions between identical fermions in quasi-one-dimensional geometries
Kenneth G. Jackson, Colin J. Dale, Jeff Maki +5
Orbital degrees of freedom play an essential role in metals, semiconductors, and strongly confined electronic systems. Experiments with ultracold atoms have used highly anisotropic…
Three-body recombination in a single-component Fermi gas with -wave interaction
Shangguo Zhu, Zhenhua Yu, Shizhong Zhang
We study the three-body recombination of identical fermionic atoms. Using a zero-range model for the -wave interaction, we show that the rate constant of three-body recombinatio…
Dynamics of strongly interacting Fermi gases with time-dependent interactions: Consequence of conformal symmetry
Jeff Maki, Shizhong Zhang, Fei Zhou
In this Letter, we investigate the effects of a time-dependent, short-ranged interaction on the long-time expansion dynamics of Fermi gases. We show that the effects of the interac…
Dynamical Kosterlitz-Thouless Theory for Two-Dimensional Ultracold Atomic Gases
Zhigang Wu, Shizhong Zhang, Hui Zhai
In this letter we develop a theory for the first and second sound in a two-dimensional atomic superfluid across the superfluid transition based on the dynamic Koterlitz-Thouless th…
Manipulation of heteronuclear spin dynamics with microwave and vector light shift
Lintao Li, Bing Zhu, Bo Lu +2
We report the observation and manipulation of heteronuclear spin dynamics in a spin-1 mixture of ultracold Rb and Na atoms. The dynamics is driven by the interspecies…
The Role of the Effective Range in Resonantly Interacting Fermi Gases: How Breaking Scale Symmetry Affects the Bulk Viscosity
Jeff Maki, Shizhong Zhang
We investigate the role of the effective range on the bulk viscosity of - and -wave Fermi gases. At resonance, the presence of the effective range breaks the scale invariance…
Grüneisen Parameters: origin, identity and quantum refrigeration
Yi-Cong Yu, Shizhong Zhang, Xi-Wen Guan
In solid state physics, the Grüneisen parameter (GP), originally introduced in the study of the effect of changing the volume of a crystal lattice on its vibrational frequency, has…
Collective excitations in two-dimensional SU() Fermi gases with tunable spin
Chengdong He, Zejian Ren, Bo Song +5
We measure collective excitations of a harmonically trapped two-dimensional (2D) SU() Fermi gas of Yb confined to a stack of layers formed by a one-dimensional optical l…
Quantum Spin Dynamics in a Normal Bose Gas with Spin-orbit Coupling
Wai Ho Tang, Shizhong Zhang
In this Letter, we investigate spin dynamics of a two-component Bose gas with spin-orbit coupling realised in cold atom experiments. We derive coupled hydrodynamic equations for nu…
Momentum distribution and contacts of one-dimensional spinless Fermi gases with an attractive p-wave interaction
Xiangguo Yin, Xi-Wen Guan, Yunbo Zhang +2
We present a rigorous study of momentum distribution and p-wave contacts of one dimensional (1D) spinless Fermi gases with an attractive p-wave interaction. Using the Bethe wave fu…