Instruct: Identify the main and secondary category of Arxiv papers based on the titles and abstracts
Query: Entropy, Macroscopic Information, and Phase Transitions   The relationship between entropy and information is reviewed, taking into
account that information is stored in macroscopic degrees of freedom, such as
the order parameter in a system exhibiting spontaneous symmetry breaking. It is
shown that most problems of the relationship between entropy and information,
embodied in a variety of Maxwell demons, are also present in any symmetry
breaking transition.

34
The categories of this paper are: chem-ph
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The categories of this paper are: mtrl-th
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The categories of this paper are: adap-org
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The categories of this paper are: supr-con
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The categories of this paper are: plasm-ph
22
The categories of this paper are: chao-dyn
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The categories of this paper are: q-alg
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The categories of this paper are: dg-ga
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The categories of this paper are: hep-th
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The categories of this paper are: q-fin
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The categories of this paper are: funct-an
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The categories of this paper are: nucl-ex
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The categories of this paper are: hep-lat
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The categories of this paper are: patt-sol
0
The categories of this paper are: hep-ph
5
The categories of this paper are: gr-qc