Instruct: Identify the main and secondary category of Arxiv papers based on the titles and abstracts
Query: Paired Accelerated Frames   The geometrical and quantum mechanical basis for Davies' and Unruh's
acceleration temperature is traced to a type of quantum mechanical
(``achronal'') spin. Its existence and definition are based on pairs of
causally disjoint accelerated frames. For bosons the expected spin vector of
monochromatic particles is given by the ``Planckian power'' and the ``r.m.s.
thermal fluctuation'' spectra. Under spacetime translation the spin direction
precesses around that ``Planckian'' vector. By exhibiting the conserved
achronal spin four-current, we extend the identification of achronal spin from
single quanta to multiparticle systems. Total achronal spin conservation is
also shown to hold, even in the presence of quadratic interactions.

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The categories of this paper are: bayes-an
12
The categories of this paper are: nucl-th
16
The categories of this paper are: stat
8
The categories of this paper are: hep-ex
4
The categories of this paper are: cond-mat
29
The categories of this paper are: funct-an
11
The categories of this paper are: hep-lat
14
The categories of this paper are: math-ph
36
The categories of this paper are: cmp-lg
37
The categories of this paper are: supr-con
22
The categories of this paper are: chao-dyn
19
The categories of this paper are: eess
30
The categories of this paper are: q-alg
2
The categories of this paper are: math
28
The categories of this paper are: alg-geom
9
The categories of this paper are: nlin