Instruct: Identify the main and secondary category of Arxiv papers based on the titles and abstracts
Query: Entanglement Entropy at Finite Density from Extremal Black Holes   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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The categories of this paper are: plasm-ph
6
The categories of this paper are: astro-ph
8
The categories of this paper are: hep-ex
5
The categories of this paper are: gr-qc
32
The categories of this paper are: atom-ph
1
The categories of this paper are: cs
26
The categories of this paper are: bayes-an
36
The categories of this paper are: cmp-lg
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The categories of this paper are: supr-con
27
The categories of this paper are: comp-gas
9
The categories of this paper are: nlin
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The categories of this paper are: acc-phys
24
The categories of this paper are: dg-ga
11
The categories of this paper are: hep-lat
29
The categories of this paper are: funct-an
25
The categories of this paper are: patt-sol