Scaling of reduced fidelity susceptibility in the one-dimensional transverse-field XY model

We show that the reduced fidelity Susceptibility in the family of one-dimensional XY model obeys scaling behavior in the vicinity of quantum critical points both analytically and numerically. The logarithmic divergence behavior Suggests that the reduced fidelity susceptibility can act as an indicator of quantum phase transition. (C) 2009 Elsevier B.V. All rights reserved.