Journal article

Detecting phase transitions and crossovers in Hubbard models using the fidelity susceptibility

  • Huang, Li Science and Technology on Surface Physics and Chemistry Laboratory, Jiangyou, China
  • Wang, Yilin Beijing National Laboratory for Condensed Matter Physics, and Institute of Physics, Chinese Academy of Sciences, China
  • Wang, Lei Beijing National Laboratory for Condensed Matter Physics, and Institute of Physics, Chinese Academy of Sciences, China - Theoretische Physik, ETH Zurich, Switzerland
  • Werner, Philipp Department of Physics, University of Fribourg, Switzerland
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    05.12.2016
Published in:
  • Physical Review B. - 2016, vol. 94, no. 23, p. 235110
English A generalized version of the fidelity susceptibility of single-band and multiorbital Hubbard models is systematically studied using single-site dynamical mean-field theory in combination with a hybridization expansion continuous-time quantum Monte Carlo impurity solver. We find that the fidelity susceptibility is extremely sensitive to changes in the state of the system. It can be used as a numerically inexpensive tool to detect and characterize a broad range of phase transitions and crossovers in Hubbard models, including (orbital-selective) Mott metal-insulator transitions, magnetic phase transitions, high-spin to low-spin transitions, Fermi-liquid to non-Fermi-liquid crossovers, and spin-freezing crossovers.
Faculty
Faculté des sciences et de médecine
Department
Département de Physique
Language
  • English
Classification
Physics
License
License undefined
Identifiers
Persistent URL
https://folia.unifr.ch/unifr/documents/305292
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