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Fluctuations and instabilities of a holographic metal

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arxiv 1211.1381 v2 pith:RRGNMW6Q submitted 2012-11-06 hep-th cond-mat.str-el

classification hep-thcond-mat.str-el
keywords fieldmagneticphasedensityhallholographicinstabilitymodel
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We analyze the quasinormal modes of the D2-D8' model of 2+1-dimensional, strongly-coupled, charged fermions in a background magnetic field and at nonzero density. The model is known to include a quantum Hall phase with integer filling fraction. As expected, we find a hydrodynamical diffusion mode at small momentum and the nonzero-temperature holographic zero sound, which becomes massive above a critical magnetic field. We confirm the previously-known thermodynamic instability. In addition, we discover an instability at low temperature, large mass, and in a charge density and magnetic field range near the quantum Hall phase to an inhomogeneous striped phase.

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  1. Holographic fundamental matter in multilayered media

    hep-th 2019-09 conditional novelty 6.0 of 10

    A top-down holographic D3-D5-D7 construction yields anisotropic thermodynamics and distinct in-plane and off-plane sound and diffusion modes for strongly coupled layered matter with fundamental flavors.

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