Holographic Fermi surfaces and bulk dipole couplings

Details Holographic Fermi surfaces and bulk dipole couplings Holographic Fermi surfaces and bulk dipole couplings

2011-02-18

arxiv.org/abs/1102.3908v2

Physics

High Energy Physics

High Energy Physics - Theory

22 pages, many figures; contribution to RPMBT15. v2: added refs; substantially improved comments on related work, both politic

Scientific paper

Non-Fermi liquids can be studied using holographic duality. The low energy physics of a holographic Fermi surface is controlled by an emergent scale invariance. After reviewing these developments, we generalize the holographic calculation to include in the bulk action the leading irrelevant operator, which is a dipole coupling between the spinor field and the background gauge field. We find that this dipole coupling changes the attainable low-energy scaling dimensions, and changes the locations of the Fermi surfaces in momentum space. The structure of the holographic framework for non-Fermi liquids is, however, robust under this deformation.

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