Instruct: Identify the main and secondary category of Arxiv papers based on the titles and abstracts
Query: A Study of Universal Thermodynamics in Brane World Scenario   A study of Universal thermodynamics is done in the frame work of RSII brane
model and DGP brane scenario. The Universe is chosen as FRW model bounded by
apparent or event horizon. Assuming extended Hawking temperature on the
horizon, the unified first law is examined for perfect fluid (with constant
equation of state) and modified Chaplygin gas model. As a result there is a
modification of Bekenstein entropy on the horizons. Further the validity of the
generalized second law of thermodynamics and thermodynamical equilibrium are
also investigated.

14
The categories of this paper are: math-ph
33
The categories of this paper are: plasm-ph
1
The categories of this paper are: cs
15
The categories of this paper are: nucl-ex
31
The categories of this paper are: ao-sci
20
The categories of this paper are: acc-phys
21
The categories of this paper are: adap-org
18
The categories of this paper are: econ
2
The categories of this paper are: math
4
The categories of this paper are: cond-mat
13
The categories of this paper are: quant-ph
6
The categories of this paper are: astro-ph
11
The categories of this paper are: hep-lat
23
The categories of this paper are: solv-int
9
The categories of this paper are: nlin
32
The categories of this paper are: atom-ph