期刊
PHYSICAL REVIEW LETTERS
卷 119, 期 14, 页码 -出版社
AMER PHYSICAL SOC
DOI: 10.1103/PhysRevLett.119.146601
关键词
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资金
- NSF [DMR-1455366]
- UC President's Research Catalyst Award [CA-15-327861]
- Burke Institute at Caltech
Non-Fermi liquids are metals that cannot be adiabatically deformed into free fermion states. We argue for the existence of non-Fermi glasses, phases of interacting disordered fermions that are fully many-body localized (MBL), yet cannot be deformed into an Anderson insulator without an eigenstate phase transition. We explore the properties of such non-Fermi glasses, focusing on a specific solvable example. At high temperature, non-Fermi glasses have qualitatively similar spectral features to Anderson insulators. We identify a diagnostic based on ratios of correlators that sharply distinguishes between the two phases even at infinite temperature. Our results and diagnostic should generically apply to the high-temperature behavior of MBL descendants of fractionalized phases.
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