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Published on: August 15, 2018
Phenomenological characterization of semiholographic non-Fermi liquids
Ayan Mukhopadhyay1, Giuseppe Policastro2
1Centre de Physique Théorique, École Polytechnique, CNRS, 91128 Palaiseau, France and Institut de Physique Théorique, CEA Saclay, CNRS URA 2306, F-91191 Gif-sur-Yvette, France.
Abstract:
We analyze some phenomenological implications of the most general semiholographic models for non-Fermi liquids that have emerged with inputs from the holographic correspondence. We find generalizations of Landau-Silin equations with few parameters governing thermodynamics, low-energy response, and collective excitations. We show that even when there is a Fermi surface with well-defined quasiparticle excitations, the collective excitations can behave very differently from Landau's theory.
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