Abstract
The fidelity approach to the Gaussian transitions in spin-one spin chains with three different values of Ising-type anisotropy is analyzed by means of the density matrix renormalization group technique for systems of large sizes. We find that, despite the success in the cases of and 1, the fidelity susceptibility fails to detect the Gaussian transition for . Thus our results demonstrate the limitation of the fidelity susceptibility in characterizing quantum phase transitions, which was proposed recently in general frameworks.
2 More- Received 3 April 2008
DOI:https://doi.org/10.1103/PhysRevA.77.062321
©2008 American Physical Society