Fidelity susceptibility, scaling, and universality in quantum critical phenomena
By S. Gu, H. Kwok, W. Ning, Hai-Qing Lin. 2007
138 citations recorded by the source corpus.
We study fidelity susceptibility in the 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 Kosterlitz\char21{}Thouless-type transition occurred at half-filling and the Landau transition away from half-filling can be discriminated from distinct critical exponents of the fidelity susceptibility.
Subfields: Atomic and Molecular Physics, and Optics, Condensed Matter Physics
View Paper: https://www.semanticscholar.org/paper/80b2d30c4f8aa80117eada094bcc1d5e4795f8d1
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Citations in the corpus
- Quantum-enhanced measurements without entanglement (2017, background): “The quantum Fisher Information It↓/t↑ at critical points is su- perextensiveO ( Lα ) , where the exponent was numerically computed α ' 5.3 (Gu et al., 2008).”