217 citations · 382 across the 5 of their papers we have counts for
5 papers
The scaling behavior of logarithmic fidelity in quantum phase transition in LMG model
Ching-Yee Leung, Ho-Man Kwok, Shi-Jian Gu +1
In this paper, we explore the differences between classical logarithmic fidelity and quantum fidelity. The classical logarithmic fidelity is found to be always extensive while the…
Fidelity susceptibility in the two-dimensional transverse field Ising and XXZ models
Wing-Chi Yu, Ho-Man Kwok, Junpeng Cao +1
We study the fidelity susceptibility in the two-dimensional(2D) transverse field Ising model and the 2D XXZ model numerically. It is found that in both models, the fidelity suscept…
Partial-state fidelity and quantum phase transitions induced by continuous level crossing
Ho-Man Kwok, Chun-Sing Ho, Shi-Jian Gu
The global-state fidelity cannot characterize those quantum phase transitions (QPTs) induced by continuous level crossing due to its collapse around each crossing point. In this pa…
Quantum criticality of the Lipkin-Meshkov-Glick Model in terms of fidelity susceptibility
Ho-Man Kwok, Wen-Qiang Ning, Shi-Jian Gu +1
We study the critical properties of the Lipkin-Meshkov-Glick Model in terms of the fidelity susceptibility. By using the Holstein-Primakoff transformation, we obtain explicitly the…
Fidelity susceptibility, scaling, and universality in quantum critical phenomena
Shi-Jian Gu, Ho-Man Kwok, Wen-Qiang Ning +1
We study fidelity susceptibility in one-dimensional asymmetric Hubbard model, and show that the fidelity susceptibility can be used to identify the universality class of the quantu…