11 papers
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…
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…
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…
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…
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…
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…