Holographic Fermi surfaces near quantum phase transitions

Details Holographic Fermi surfaces near quantum phase transitions Holographic Fermi surfaces near quantum phase transitions

2011-12-14

arxiv.org/abs/1112.3318v1

Physics

High Energy Physics

High Energy Physics - Theory

11 pages, 6 figures

Scientific paper

We study holographic Fermi surfaces coupled to a bosonic degree of freedom using the gauge/gravity correspondence. The gravity background is a charged black hole in asymptotically AdS spacetime. We introduce a neutral scalar field with parameters such that the system is at a quantum phase transition point. We further introduce a Dirac field and couple it to the scalar. At finite N, these fields interact in the bulk. We compute the bulk one-loop contribution to the boundary fermionic self-energies at various quantum phase transition points. The results would give an embedding of the marginal Fermi liquid model by Varma et al. into a holographic context. We comment on important issues that arise at low energies when one wants to take the one-loop results more seriously.

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