Instruct: Identify the main and secondary category of Arxiv papers based on the titles and abstracts
Query: Scalar Fields in BTZ Black Hole Spacetime and Entanglement Entropy   We study the quantum scalar fields in background of BTZ black hole spacetime.
We calculate the entanglement entropy using the discretized model, which
resembles a system of coupled harmonic oscillators. The leading term of the
entropy formula is standard Bakenstein-Hawking entropy and sub-leading
corresponds to quantum corrections to black hole entropy. We calculate the
co-efficent of sub-leading logarithmic corrections numerically.

29
The categories of this paper are: funct-an
13
The categories of this paper are: quant-ph
33
The categories of this paper are: plasm-ph
14
The categories of this paper are: math-ph
10
The categories of this paper are: q-bio
28
The categories of this paper are: alg-geom
21
The categories of this paper are: adap-org
12
The categories of this paper are: nucl-th
3
The categories of this paper are: physics
37
The categories of this paper are: supr-con
8
The categories of this paper are: hep-ex
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The categories of this paper are: mtrl-th
36
The categories of this paper are: cmp-lg
15
The categories of this paper are: nucl-ex
9
The categories of this paper are: nlin
6
The categories of this paper are: astro-ph