Instruct: Identify the main and secondary category of Arxiv papers based on the titles and abstracts
Query: Static, stationary and inertial Unruh-DeWitt detectors on the BTZ black
  hole   We examine an Unruh-DeWitt particle detector coupled to a scalar field in
three-dimensional curved spacetime. We first obtain a regulator-free expression
for the transition probability in an arbitrary Hadamard state, working within
first-order perturbation theory and assuming smooth switching, and we show that
both the transition probability and the instantaneous transition rate remain
well defined in the sharp switching limit. We then analyse a detector coupled
to a massless conformally coupled field in the Hartle-Hawking vacua on the
Banados-Teitelboim-Zanelli black hole, under both transparent and reflective
boundary conditions at the infinity. A selection of stationary and
freely-falling detector trajectories are examined, including the co-rotating
trajectories, for which the response is shown to be thermal. Analytic results
in a number of asymptotic regimes, including those of large and small mass, are
complemented by numerical results in the interpolating regimes. The boundary
condition at infinity is seen to have a significant effect on the transition
rate.

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The categories of this paper are: hep-ph
31
The categories of this paper are: ao-sci
34
The categories of this paper are: chem-ph
10
The categories of this paper are: q-bio
21
The categories of this paper are: adap-org
22
The categories of this paper are: chao-dyn
4
The categories of this paper are: cond-mat
23
The categories of this paper are: solv-int
33
The categories of this paper are: plasm-ph
11
The categories of this paper are: hep-lat
2
The categories of this paper are: math
13
The categories of this paper are: quant-ph
25
The categories of this paper are: patt-sol
27
The categories of this paper are: comp-gas
3
The categories of this paper are: physics
18
The categories of this paper are: econ