Instruct: Identify the main and secondary category of Arxiv papers based on the titles and abstracts
Query: The Dynamics of Money   We present a dynamical many-body theory of money in which the value of money
is a time dependent ``strategic variable'' that is chosen by the individual
agents. The value of money in equilibrium is not fixed by the equations, and
thus represents a continuous symmetry. The dynamics breaks this continuous
symmetry by fixating the value of money at a level which depends on initial
conditions. The fluctuations around the equilibrium, for instance in the
presence of noise, are governed by the ``Goldstone modes'' associated with the
broken symmetry. The idea is illustrated by a simple network model of
monopolistic vendors and buyers.

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The categories of this paper are: chem-ph
13
The categories of this paper are: quant-ph
5
The categories of this paper are: gr-qc
2
The categories of this paper are: math
16
The categories of this paper are: stat
7
The categories of this paper are: hep-th
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The categories of this paper are: cmp-lg
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The categories of this paper are: acc-phys
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The categories of this paper are: econ
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The categories of this paper are: ao-sci
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The categories of this paper are: chao-dyn
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The categories of this paper are: bayes-an
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The categories of this paper are: patt-sol
1
The categories of this paper are: cs
10
The categories of this paper are: q-bio
23
The categories of this paper are: solv-int