Non-Fermi liquids from holography

Details Non-Fermi liquids from holography Non-Fermi liquids from holography

2009-03-16

arxiv.org/abs/0903.2477v3

Phys.Rev.D83:065029,2011

Physics

High Energy Physics

High Energy Physics - Theory

10 pages, 16 figures. v2: added references, corrected figures, some minor changes. v3: figure 5 replaced

Scientific paper

10.1103/PhysRevD.83.065029

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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