46 citations · 108 across the 7 of their papers we have counts for
4 papers · 1 filter
Macroscopic Quantum States and Quantum Phase Transition in Dicke Models of Arbitrary Atom-Number
Jinling Lian, Yuanwei Zhang, J. -Q. Liang
The energy spectrum of Dicke Hamiltonians with and without the rotating wave approximation for arbitrary atom-number is obtained analytically with the variational method, in which…
Geometric phase in the Kitaev honeycomb model and scaling behavior at critical points
Jinling Lian, J. -Q. Liang, Gang Chen
In this paper a geometric phase of the Kitaev honeycomb model is derived and proposed to characterize the topological quantum phase transition. The simultaneous rotation of two spi…
Analytical ground state for the Jaynes-Cummings model with the ultrastrong coupling
Yuanwei Zhang, Gang Chen, Lixian Yu +3
We present a generalized variational method to analytically obtain the ground-state properties of the unsolvable Jaynes-Cummings model with the ultrastrong coupling. An explicit ex…
Light-shift-induced quantum phase transitions of a Bose-Einstein condensate in the optical cavities
Ni Liu, Jinling Lian, Jie Ma +4
In this paper we reveal the rich ground-state properties induced by the strong nonlinear atom-photon interaction, which has been found in the recent experiment about a Bose-Einstei…