Instruct: Identify the main and secondary category of Arxiv papers based on the titles and abstracts
Query: Multicanonical distribution and the origin of power laws   A multicanonical formalism is applied to the problem of statistical
equilibrium in a complex system with a hierarchy of dynamical structures. At
the small scales the system is in quasi-equilibrium and follows a
Maxwell-Boltzmann distribution with a slowly fluctuating temperature. The
probability distribution for the temperature is determined using Bayesian
analysis and it is then used to average the Maxwell-Boltzmann distribution. The
resulting energy distribution law is written in terms of generalized
hypergeometric functions, which display power-law tails.

37
The categories of this paper are: supr-con
6
The categories of this paper are: astro-ph
24
The categories of this paper are: dg-ga
21
The categories of this paper are: adap-org
31
The categories of this paper are: ao-sci
3
The categories of this paper are: physics
0
The categories of this paper are: hep-ph
30
The categories of this paper are: q-alg
16
The categories of this paper are: stat
23
The categories of this paper are: solv-int
1
The categories of this paper are: cs
20
The categories of this paper are: acc-phys
12
The categories of this paper are: nucl-th
15
The categories of this paper are: nucl-ex
10
The categories of this paper are: q-bio
18
The categories of this paper are: econ