Striped instability of a holographic Fermi-like liquid

Details Striped instability of a holographic Fermi-like liquid Striped instability of a holographic Fermi-like liquid

2011-06-20

arxiv.org/abs/1106.3883v2

JHEP 10 (2011) 034

Physics

High Energy Physics

High Energy Physics - Theory

16 pages, 9 figures; v2: added discussion and one figure. Typos corrected

Scientific paper

10.1007/JHEP10(2011)034

We consider a holographic description of a system of strongly-coupled fermions in 2+1 dimensions based on a D7-brane probe in the background of D3-branes. The black hole embedding represents a Fermi-like liquid. We study the excitations of the Fermi liquid system. Above a critical density which depends on the temperature, the system becomes unstable towards an inhomogeneous modulated phase which is similar to a charge density and spin wave state. The essence of this instability can be effectively described by a Maxwell-axion theory with a background electric field. We also consider the fate of zero sound at non-zero temperature.

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