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October 9, 2025Open Access

Quantum criticality and non-Fermi liquids: the nonperturbative renormalization group perspective

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Authors

MHMateusz HomendaUniversity of WarsawPJPaweł JakubczykWarsaw University of Life SciencesHYHiroyuki YamaseNational Institute for Materials Science

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Implication

Theoretical framework tackles non-Fermi liquid scaling and quantum critical points, implying novel fixed-point behaviors.

Key Points

  • Non-Fermi liquid scaling of fermions is observed upon lowering the cutoff scale, affecting the system's behavior.
  • The derived scaling exponent for the Fermi self-energy is approximately 0.50, contrasting with previous estimates of 0.66.
  • This analysis employs a nonperturbative renormalization group approach to examine coupled fermionic and bosonic fluctuations.
  • Implications of this framework suggest deviations from traditional random phase approximation fixed points, indicating new scaling properties.

Cite This Study

Homenda et al. (2025) studied this question.

synapsesocial.com/papers/68e8439a9989581a2fd4e0c4https://doi.org/10.48550/arxiv.2505.10140
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