5 papers
Phase transition from eigenstate thermalization: forbidden singularity and instanton proliferation via AGT correspondence
Yongjiang Xu, Weixin Sun, Chushun Tian +1
In theoretical physics, finding connections between problems that appear in distinct contexts is an important way to leapfrog progresses, often by illuminating deep aspects that ma…
Lee-Yang paradigm of phase transition in eigenstate thermalized systems
Yongjiang Xu, Weixin Sun, Chushun Tian +1
As phase transitions in isolated quantum systems remain elusive, here we show how a thermodynamic-like phase transition, falling into the Lee-Yang paradigm, can arise in systems di…
Geometry protected probabilistic structure in many-body dynamics
Yue Liu, Chushun Tian, Dahai He
Insomuch as statistical mechanics circumvents the formidable task of addressing many-body dynamics, it remains a challenge to derive macroscopic properties from a solution to Hamil…
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…
Boson-fermion universality of mesoscopic entanglement fluctuations in free systems
Cunzhong Lou, Chushun Tian, Zhixing Zou +2
Entanglement fluctuations associated with Schrödinger evolution of wavefunctions offer a unique perspective on various fundamental issues ranging from quantum thermalization to sta…