A first order superfluid-Mott insulator transition for a Bose–Hubbard model in an emergent lattice

作     者：Yu Chen Yu Chen

作者机构：Graduate School of China Academy of Engineering PhysicsBeijing 100193China 

出 版 物：《Communications in Theoretical Physics》 (理论物理通讯（英文版）)

年 卷 期：2022年第74卷第12期

页      面：124-129页

核心收录：

学科分类：07[理学] 070205[理学-凝聚态物理] 0702[理学-物理学] 

基　　金：Beijing Natural Science Foundation(Z180013) NSFC under Grant No.12174358 and No.11734010 

主　　题：Bose-Hubbard model emergent symmetry cavity QED liquid-gas transition 

摘      要：The combination of strong correlation and emergent lattice can be achieved when quantum gases are confined in a superradiant Fabry–Perot *** addition to the discoveries of exotic phases,such as density wave ordered Mott insulator and superfluid,a surprising kink structure is found in the slope of the cavity strength as a function of the pumping *** this article,we show that the appearance of such a kink is a manifestation of a liquid–vapour-like transition between two superfluids with different *** slopes in the immediate neighborhood of the kink become divergent at the liquid–vapour critical points and display a critical scaling law with a critical exponent 1 in the quantum critical region.