Instruct: Identify the main and secondary category of Arxiv papers based on the titles and abstracts
Query: Thermodynamics, Phase Transition and Joule Thomson Expansion of novel
  4-D Gauss Bonnet AdS Black Hole   We investigate the thermodynamic behaviour of the four dimension Gauss Bonnet
black hole, proposed in [Phys. Rev. Lett. 124, 081301 (2020)], in the AdS
background . We study the thermodynamics in extended phase space, where the
cosmological constant is taken as the thermodynamic pressure. The black hole
exhibits a phase transition similar to that of van der Waals system. The phase
transition is investigated via isotherms in $P-V$ diagram, Gibbs free energy
and specific heat plots. The charged and neutral cases are considered
separately to observe the effect of charge on critical behaviour. In both cases
the van der Waals like behaviour is exhibited. We also study the throttling
process of the black hole analytically using isenthalpic and inversion curves.

6
The categories of this paper are: astro-ph
31
The categories of this paper are: ao-sci
12
The categories of this paper are: nucl-th
32
The categories of this paper are: atom-ph
23
The categories of this paper are: solv-int
25
The categories of this paper are: patt-sol
24
The categories of this paper are: dg-ga
27
The categories of this paper are: comp-gas
16
The categories of this paper are: stat
21
The categories of this paper are: adap-org
30
The categories of this paper are: q-alg
28
The categories of this paper are: alg-geom
8
The categories of this paper are: hep-ex
20
The categories of this paper are: acc-phys
10
The categories of this paper are: q-bio
36
The categories of this paper are: cmp-lg