Fermi surfaces in maximal gauged supergravity

Oliver Dewolfe, Steven S. Gubser, Christopher Rosen

Research output: Contribution to journalArticle

29 Scopus citations

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.

Original languageEnglish (US)
Article number251601
JournalPhysical review letters
Volume108
Issue number25
DOIs
StatePublished - Jun 19 2012

All Science Journal Classification (ASJC) codes

  • Physics and Astronomy(all)

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