A Non-Fermi Liquid from a Charged Black Hole; A Critical Fermi Ball
High Energy Physics - Theory
2009-11-06 v3 Strongly Correlated Electrons
Abstract
Using the AdS/CFT correspondence, we calculate a fermionic spectral function in a 2+1 dimensional non-relativistic quantum field theory which is dual to a gravitational theory in the background with a charged black hole. The spectral function shows no quasiparticle peak but the Fermi surface is still well defined. Interestingly, all momentum points inside the Fermi surface are critical and the gapless modes are defined in a {\it critical Fermi ball} in the momentum space.
Cite
@article{arxiv.0809.3402,
title = {A Non-Fermi Liquid from a Charged Black Hole; A Critical Fermi Ball},
author = {Sung-Sik Lee},
journal= {arXiv preprint arXiv:0809.3402},
year = {2009}
}
Comments
v3) discussion on the singular nature of the zero energy peak added; to appear in Phys. Rev. D