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arXiv · 1210.0029

Compressible Matter at a Holographic Interface

Moshe Rozali
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Abstract

We study the interface between a fractional topological insulator and an ordinary insulator, both described using holography. By turning on a chemical potential we induce a finite density of matter localized at the interface. These are gapless surface excitations which are expected to have a fermionic character. We study the thermodynamics of the system, finding a symmetry preserving compressible state at low temperatures, whose excitations exhibit hyperscaling violation. These results are consistent with the expectation of gapless fermionic excitations forming a Fermi surface at finite density.

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Moshe Rozali. 2012-11-27. Compressible Matter at a Holographic Interface. https://doi.org/10.1103/physrevlett.109.231601

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