Instruct: Identify the main and secondary category of Arxiv papers based on the titles and abstracts
Query: Why does the Unruh effect rely on Lorentz invariance, while Hawking
  radiation does not ?   We show that without Lorentz invariance, the Unruh effect does not exist. We
use modified dispersion relations and describe in turn: the non-thermal nature
of the vacuum (defined in the preferred frame) restricted to the Rindler wedge,
the loss of the KMS property of the Wigthman function, the transition
amplitudes and transition rates of a uniformaly accelerated detector. This
situation seems to contrast with the Hawking radiation of acoustic black holes,
which under certain assumptions has been shown to be robust to a breaking of
Lorentz symmetry. We explain this discrepancy.

22
The categories of this paper are: chao-dyn
25
The categories of this paper are: patt-sol
9
The categories of this paper are: nlin
17
The categories of this paper are: q-fin
4
The categories of this paper are: cond-mat
2
The categories of this paper are: math
29
The categories of this paper are: funct-an
18
The categories of this paper are: econ
32
The categories of this paper are: atom-ph
23
The categories of this paper are: solv-int
20
The categories of this paper are: acc-phys
15
The categories of this paper are: nucl-ex
24
The categories of this paper are: dg-ga
1
The categories of this paper are: cs
34
The categories of this paper are: chem-ph
26
The categories of this paper are: bayes-an