Instruct: Identify the main and secondary category of Arxiv papers based on the titles and abstracts
Query: q-Thermostatistics and the black-body radiation problem   We give an exact information-theory treatment of the $n$-dimensional
black-body radiation process in a non-extensive scenario. We develop a $q$
generalization of the laws of i) Stefan Boltzmann, ii) Planck, and iii) Wien,
and show that conventional, canonical results are obtained at temperatures
above $1 K$. Classical relationships between radiation, pressure, and internal
energy are recovered (independently of the $q$-value). Analyzing the particles'
density for $q\approx 1$ we see that the non-extensive parameter $q$ introduces
a fictitious chemical potential. We apply our results to experimental data on
the cosmic microwave background and reproduce it with acceptable accuracy for
different temperatures (each one associated to a particular $q$ value

7
The categories of this paper are: hep-th
14
The categories of this paper are: math-ph
28
The categories of this paper are: alg-geom
22
The categories of this paper are: chao-dyn
6
The categories of this paper are: astro-ph
35
The categories of this paper are: mtrl-th
8
The categories of this paper are: hep-ex
12
The categories of this paper are: nucl-th
37
The categories of this paper are: supr-con
26
The categories of this paper are: bayes-an
11
The categories of this paper are: hep-lat
16
The categories of this paper are: stat
32
The categories of this paper are: atom-ph
13
The categories of this paper are: quant-ph
36
The categories of this paper are: cmp-lg
23
The categories of this paper are: solv-int