TY - JOUR
T1 - Fermi surfaces in maximal gauged supergravity
AU - Dewolfe, Oliver
AU - Gubser, Steven S.
AU - Rosen, Christopher
PY - 2012/6/19
Y1 - 2012/6/19
N2 - 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.
AB - 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.
UR - http://www.scopus.com/inward/record.url?scp=84862560444&partnerID=8YFLogxK
UR - http://www.scopus.com/inward/citedby.url?scp=84862560444&partnerID=8YFLogxK
U2 - 10.1103/PhysRevLett.108.251601
DO - 10.1103/PhysRevLett.108.251601
M3 - Article
C2 - 23004583
AN - SCOPUS:84862560444
SN - 0031-9007
VL - 108
JO - Physical review letters
JF - Physical review letters
IS - 25
M1 - 251601
ER -