Instruct: Identify the main and secondary category of Arxiv papers based on the titles and abstracts
Query: Universal thermodynamics in different gravity theories: Conditions for
  generalized second law of thermodynamics and thermodynamical equilibrium on
  the horizons   The present work deals with a detailed study of universal thermodynamics in
different modified gravity theories. The validity of the generalized second law
of thermodynamics (GSLT) and thermodynamical equilibrium (TE) of the Universe
bounded by a horizon (apparent/event) in f(R)-gravity, Einstein-Gauss-Bonnet
gravity, RS-II brane scenario and DGP brane model has been investigated. In the
perspective of recent observational evidences, the matter in the Universe is
chosen as interacting holographic dark energy model. The entropy on the
horizons are evaluated from the validity of the unified first law and as a
result there is a correction (in integral form) to the usual Bekenstein
entropy. The other thermodynamical parameter namely temperature on the horizon
is chosen as the recently introduced corrected Hawking temperature. The above
thermodynamical analysis is done for homogeneous and isotropic flat FLRW model
of the Universe. The restrictions for the validity of GSLT and the TE are
presented in tabular form for each gravity theory. Finally, due to complicated
expressions, the validity of GSLT and TE are also examined from graphical
representation, using three Planck data sets.

6
The categories of this paper are: astro-ph
22
The categories of this paper are: chao-dyn
12
The categories of this paper are: nucl-th
11
The categories of this paper are: hep-lat
34
The categories of this paper are: chem-ph
26
The categories of this paper are: bayes-an
18
The categories of this paper are: econ
36
The categories of this paper are: cmp-lg
27
The categories of this paper are: comp-gas
23
The categories of this paper are: solv-int
31
The categories of this paper are: ao-sci
2
The categories of this paper are: math
13
The categories of this paper are: quant-ph
20
The categories of this paper are: acc-phys
14
The categories of this paper are: math-ph
9
The categories of this paper are: nlin