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Classes of metastable thermodynamic quantum time crystals

We found that thermodynamic quantum time crystals in Fermi systems, defined as quantum orders oscillating periodically in the imaginary Matsubara time with zero mean, are metastable for two general classes of solutions. Mean-field time independent solutions proved to have lower free energy manifesti...

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Published in:Physical review. B 2019-08, Vol.100 (8), p.1, Article 081103
Main Authors: Mukhin, S. I., Galimzyanov, T. R.
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Language:English
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description We found that thermodynamic quantum time crystals in Fermi systems, defined as quantum orders oscillating periodically in the imaginary Matsubara time with zero mean, are metastable for two general classes of solutions. Mean-field time independent solutions proved to have lower free energy manifesting true thermodynamic equilibrium with either single or multiple (competing) charge, spin, and superconducting symmetry breaking orders. The "no-go" theorem is proven analytically for a case of long-range interactions between fermions in momentum space in electron-hole and Cooper channels.
doi_str_mv 10.1103/PhysRevB.100.081103
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source American Physical Society:Jisc Collections:APS Read and Publish 2023-2025 (reading list)
subjects Broken symmetry
Fermions
Free energy
Holes (electron deficiencies)
Thermodynamic equilibrium
title Classes of metastable thermodynamic quantum time crystals
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