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  Yang-Lee Zeros, Semicircle Theorem, and Nonunitary Criticality in Bardeen-Cooper-Schrieffer Superconductivity

Li, H., Yu, X.-H., Nakagawa, M., & Ueda, M. (2023). Yang-Lee Zeros, Semicircle Theorem, and Nonunitary Criticality in Bardeen-Cooper-Schrieffer Superconductivity. Physical Review Letters, 131: 216001. doi:10.1103/PhysRevLett.131.216001.

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Item Permalink: https://hdl.handle.net/21.11116/0000-000C-BF9A-0 Version Permalink: https://hdl.handle.net/21.11116/0000-000E-0FD8-F
Genre: Journal Article

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Yang-Lee Singularity in BCS Superconductivity
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 Creators:
Li, Hongchao, Author
Yu, Xie-Hang1, 2, Author           
Nakagawa, Masaya, Author
Ueda, Masahito, Author
Affiliations:
1Theory, Max Planck Institute of Quantum Optics, Max Planck Society, ou_1445571              
2MCQST - Munich Center for Quantum Science and Technology, External Organizations, ou_3330166              

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Free keywords: Condensed Matter, Strongly Correlated Electrons, cond-mat.str-el
 Abstract: We investigate the Yang-Lee singularity in BCS superconductivity, and find
that the zeros of the partition function accumulate on the boundary of a
quantum phase transition, which is accompanied by nonunitary quantum critical
phenomena. By applying the renormalization-group analysis, we show that
Yang-Lee zeros distribute on a semicircle in the complex plane of interaction
strength for general marginally interacting systems.

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Language(s): eng - English
 Dates: 2022-11-202023-10-272023-11-222023-11-24
 Publication Status: Issued
 Pages: -
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 Table of Contents: -
 Rev. Type: Peer
 Identifiers: arXiv: 2211.10975v1
DOI: 10.1103/PhysRevLett.131.216001
Other: 6477
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Funding organization : Munich Quantum Valley, which is supported by the Bavarian state government with funds from the Hightech Agenda Bayern Plus

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Title: Physical Review Letters
  Abbreviation : Phys. Rev. Lett.
Source Genre: Journal
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Publ. Info: Woodbury, N.Y. : American Physical Society
Pages: - Volume / Issue: 131 Sequence Number: 216001 Start / End Page: - Identifier: ISSN: 0031-9007
CoNE: https://pure.mpg.de/cone/journals/resource/954925433406_1