Instruct: Identify the main and secondary category of Arxiv papers based on the titles and abstracts
Query: The new integral relaxation time for thermal activation of spins   The integral relaxation time for the difference of populations of the two
potential wells for double-well classical spin systems is introduced. For the
uniaxial symmetry, it is given by a quadrature. Unlike the previously
introduced integral relaxation time for the magnetization, the former at low
temperatures describes the rate of crossing the barrier under all conditions,
including the strongly biased case. In the high-barrier case, the new integral
relaxation time approaches the inverse of the lowest eigenvalue of the
Fokker-Planck equation. It can be more conveniently found by numerical methods
than the latter.

28
The categories of this paper are: alg-geom
37
The categories of this paper are: supr-con
10
The categories of this paper are: q-bio
6
The categories of this paper are: astro-ph
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The categories of this paper are: eess
18
The categories of this paper are: econ
32
The categories of this paper are: atom-ph
1
The categories of this paper are: cs
31
The categories of this paper are: ao-sci
27
The categories of this paper are: comp-gas
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The categories of this paper are: adap-org
33
The categories of this paper are: plasm-ph
8
The categories of this paper are: hep-ex
13
The categories of this paper are: quant-ph
11
The categories of this paper are: hep-lat
35
The categories of this paper are: mtrl-th