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Fermi Surfaces in Maximal Gauged Supergravity

Author(s): DeWolfe, Oliver; Gubser, Steven S; Rosen, Christopher

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Abstract: We obtain fermion fluctuation equations around extremal charged black hole geometries in maximal gauged supergravity in four and five dimensions, and we demonstrate that their solutions display Fermi surface singularities for the dual conformal field theories at finite chemical potential. The four-dimensional case is a massless charged fermion, while in five dimensions we find a massive charged fermion with a Pauli coupling. In both cases, the corresponding scaling exponent is less than one half, leading to non-Fermi liquid behavior with no stable quasiparticles, although some excitations have widths more than 10 times smaller than their excitation energy. In the five-dimensional case, both the Fermi momentum and the scaling exponent appear to have simple values, and a Luttinger calculation suggests that the gauginos may carry most of the charge of the black hole.
Publication Date: 22-Jun-2012
Electronic Publication Date: 19-Jun-2012
Citation: DeWolfe, Oliver, Gubser, Steven S, Rosen, Christopher. (2012). Fermi Surfaces in Maximal Gauged Supergravity. PHYSICAL REVIEW LETTERS, 108 (10.1103/PhysRevLett.108.251601
DOI: doi:10.1103/PhysRevLett.108.251601
ISSN: 0031-9007
Type of Material: Journal Article
Journal/Proceeding Title: PHYSICAL REVIEW LETTERS
Version: Final published version. This is an open access article.

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