1306.3941 (Ayan Mukhopadhyay et al.)

Phenomenological characterisation of semi-holographic non-Fermi liquids    [PDF]

Ayan Mukhopadhyay, Giuseppe Policastro

We analyse some phenomenological implications of the most general semi-holographic models for non-Fermi liquids that have emerged with inputs from the holographic correspondence. We find three broad classes, in each of which there are analogues 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 quasi-particle excitations, the collective excitations can behave very differently from Landau's theory.

View original: http://arxiv.org/abs/1306.3941