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arXiv · 0903.2477

Non-Fermi liquids from holography

Hong Liu·John McGreevy·David Vegh
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Abstract

We report on a potentially new class of non-Fermi liquids in (2+1)-dimensions. They are identified via the response functions of composite fermionic operators in a class of strongly interacting quantum field theories at finite density, computed using the AdS/CFT correspondence. We find strong evidence of Fermi surfaces: gapless fermionic excitations at discrete shells in momentum space. The spectral weight exhibits novel phenomena, including particle-hole asymmetry, discrete scale invariance, and scaling behavior consistent with that of a critical Fermi surface postulated by Senthil.

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Hong Liu, John McGreevy, David Vegh. 2009-03-16. Non-Fermi liquids from holography. https://doi.org/10.1103/physrevd.83.065029

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