3 papers
cond-mat.str-el2019
Intrinsic Jump Character of the First-Order Quantum Phase Transitions
Qiang Luo, Jize Zhao, Xiaoqun Wang
We find that the first-order quantum phase transitions~(QPTs) are characterized by intrinsic jumps of relevant operators while the continuous ones are not. Based on such an observa…
cond-mat.stat-mech2018
Fidelity susceptibility of the anisotropic model: The exact solution
Qiang Luo, jize Zhao, Xiaoqun Wang
We derive several closed-form expressions for the fidelity susceptibility~(FS) of the anisotropic model in the transverse field. The basic idea lies in a partial fraction expa…
cond-mat.str-el2018
Ground-state phase diagram of the frustrated spin-1/2 two-leg honeycomb ladder
Qiang Luo, Shijie Hu, Jize Zhao +3
We investigate a spin- two-leg honeycomb ladder with frustrating next-nearest-neighbor (NNN) coupling along the legs, which is equivalent to two - spin chains couple…