Entanglement Entropy at Finite Density from Extremal Black Holes

Details Entanglement Entropy at Finite Density from Extremal Black Holes Entanglement Entropy at Finite Density from Extremal Black Holes

2009-08-12

arxiv.org/abs/0908.1737v2

Physics

High Energy Physics

High Energy Physics - Theory

7 pages, 1 figure, references added

Scientific paper

I compute the entanglement entropy of a strongly coupled 2+1d quantum field theory containing fermions at finite density using gauge/gravity duality. The dual geometry is an extremal black hole in 3+1d Einstein-Maxwell theory. This system was recently shown to exhibit non-Fermi liquid behavior, but the leading geometrical contribution to the entanglement entropy does not produce an expected violation of the boundary law. I discuss this negative result in the context of attempts to find highly entangled states of quantum matter.

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