Fidelity susceptibility, scaling, and universality in quantum critical phenomena

Details Fidelity susceptibility, scaling, and universality in quantum critical phenomena Fidelity susceptibility, scaling, and universality in quantum critical phenomena

2007-06-18

arxiv.org/abs/0706.2495v2

Phys. Rev. B 77, 245109 (2008).

Physics

Quantum Physics

4 pages, 4 figures

Scientific paper

10.1103/PhysRevB.77.245109

We study fidelity susceptibility in one-dimensional asymmetric Hubbard model,
and show that the fidelity susceptibility can be used to identify the
universality class of the quantum phase transitions in this model. The critical
exponents are found to be 0 and 2 for cases of half-filling and away from
half-filling respectively.

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