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
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- English
- Classification
- Physics
- License
- License undefined
- Identifiers
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- RERO DOC 278701
- DOI 10.1103/PhysRevB.94.235110
- Persistent URL
- https://folia.unifr.ch/unifr/documents/305292
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