Nishiyama, Yoshihiro - In: Physica A: Statistical Mechanics and its Applications 392 (2013) 19, pp. 4345-4350
The overlap (inner product) between the ground-state eigenvectors with proximate interaction parameters, the so-called fidelity, plays a significant role in the quantum-information theory. In this paper, the critical behavior of the fidelity susceptibility is investigated for a two-dimensional...