Instruct: Identify the main and secondary category of Arxiv papers based on the titles and abstracts
Query: Bounds on the energy densities of ground states on static spacetimes of
  compact objects   In this paper we investigate quantum fields propagating on given, static,
spherically symmetric spacetimes, which are isometric to a part of the
Schwarzschild spacetime. Without specifying the internal geometry we show, that
there exist bounds on the energy densities of ground states of a quantum scalar
field on such spacetimes. The bounds (from above and below) come from the
so-called Quantum Energy Inequalities, and are centered around the energy
density of the Boulware state (the ground state for Schwarzschild spacetime).
The specific value of the bound from below depends critically on the distance
$\ell$ from the horizon, where the spacetimes of compact objects cease to be
isometric to the Schwarzschild spacetime. In the limit of small $\ell$ we
prove, that the energy densities of ground states cannot be below the Boulware
level.

32
The categories of this paper are: atom-ph
29
The categories of this paper are: funct-an
37
The categories of this paper are: supr-con
7
The categories of this paper are: hep-th
24
The categories of this paper are: dg-ga
11
The categories of this paper are: hep-lat
19
The categories of this paper are: eess
10
The categories of this paper are: q-bio
15
The categories of this paper are: nucl-ex
33
The categories of this paper are: plasm-ph
9
The categories of this paper are: nlin
0
The categories of this paper are: hep-ph
1
The categories of this paper are: cs
8
The categories of this paper are: hep-ex
22
The categories of this paper are: chao-dyn
12
The categories of this paper are: nucl-th