Instruct: Identify the main and secondary category of Arxiv papers based on the titles and abstracts
Query: Thermodynamic Geometry of Reissener-Nordstr\"{o}m-de Sitter black hole
  and its extremal case   We study the thermodynamics and the different thermodynamic geometric methods
of Reissener-Nordstr\"{o}m-de Sitter black hole and its extremal case, which is
similar to the de Sitter black hole coupled to a scalar field, rather called an
MTZ black hole. While studying the thermodynamics of the systems, we could find
some abnormalities. In both cases, the thermodynamic geometric methods could
give the correct explanation for the all abnormal thermodynamic behaviors in
the system.

19
The categories of this paper are: eess
16
The categories of this paper are: stat
3
The categories of this paper are: physics
12
The categories of this paper are: nucl-th
0
The categories of this paper are: hep-ph
27
The categories of this paper are: comp-gas
33
The categories of this paper are: plasm-ph
36
The categories of this paper are: cmp-lg
37
The categories of this paper are: supr-con
18
The categories of this paper are: econ
35
The categories of this paper are: mtrl-th
2
The categories of this paper are: math
8
The categories of this paper are: hep-ex
21
The categories of this paper are: adap-org
6
The categories of this paper are: astro-ph
9
The categories of this paper are: nlin