Instruct: Identify the main and secondary category of Arxiv papers based on the titles and abstracts
Query: Scalar QED Action Density and Schwinger Pair Production in (A)dS_2   We review the one-loop effective action in scalar QED and the Schwinger
effect in a uniform electric field in a two-dimensional (anti-) de Sitter
space. The Schwinger effect has a thermal interpretation in terms of the
effective temperature introduced by Cai and Kim. We propose a method to find
the density of states for the charged scalar and obtain the QED action density
and the pair-production rate in the in-out formalism.

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The categories of this paper are: econ
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The categories of this paper are: nucl-th
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The categories of this paper are: gr-qc
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The categories of this paper are: bayes-an
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The categories of this paper are: chem-ph
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The categories of this paper are: astro-ph
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The categories of this paper are: acc-phys
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The categories of this paper are: quant-ph
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The categories of this paper are: adap-org
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The categories of this paper are: math-ph
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The categories of this paper are: physics
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The categories of this paper are: supr-con
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The categories of this paper are: hep-lat
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The categories of this paper are: solv-int
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The categories of this paper are: alg-geom
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The categories of this paper are: dg-ga