Instruct: Identify the main and secondary category of Arxiv papers based on the titles and abstracts
Query: Universal Long-Time Relaxation on the Lattices of Classical Spins:
  Markovian Behavior on non-Markovian Timescales   The long-time behavior of certain fast-decaying infinite temperature
correlation functions on one-, two- and three-dimensional lattices of classical
spins with various kinds of nearest-neighbor interactions is studied
numerically, and evidence is presented that the functional form of this
behavior is either simple exponential or exponential multiplied by cosine. Due
to the fast characteristic timescale of the long-time decay, such a
universality cannot be explained on the basis of conventional Markovian
assumptions. It is suggested that this behavior is related to the chaotic
properties of the spin dynamics.

18
The categories of this paper are: econ
20
The categories of this paper are: acc-phys
25
The categories of this paper are: patt-sol
26
The categories of this paper are: bayes-an
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The categories of this paper are: mtrl-th
34
The categories of this paper are: chem-ph
6
The categories of this paper are: astro-ph
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The categories of this paper are: solv-int
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The categories of this paper are: math-ph
37
The categories of this paper are: supr-con
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The categories of this paper are: eess
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The categories of this paper are: comp-gas
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The categories of this paper are: atom-ph
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The categories of this paper are: nucl-ex
12
The categories of this paper are: nucl-th
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The categories of this paper are: dg-ga