Reduced fidelity susceptibility in the one-dimensional transverse field Ising model

Ma, Jian; Xu, Lei; Wang, Xiaoguang

Reduced fidelity susceptibility in the one-dimensional transverse field Ising model

Authors

Ma, Jian

Xu, Lei

Wang, Xiaoguang

Description

We study critical behaviors of the reduced fidelity susceptibility for two neighboring sites in the one-dimensional transverse field Ising model. It is found that the divergent behaviors of the susceptibility take the form of square of logarithm, in contrast with the global ground-state fidelity susceptibility which is power divergence. In order to perform a scaling analysis, we take the square root of the susceptibility and determine the scaling exponent analytically and the result is further confirmed by numerical calculations.
6 pages, 3 figures