Instruct: Identify the main and secondary category of Arxiv papers based on the titles and abstracts
Query: Revisiting Conserved Charges in Higher Curvature Gravitational Theories   Restricting the covariant gravitational phase spaces to the manifold of
parametrized families of solutions, the mass, angular momenta, entropies, and
electric charges can be calculated by a single and simple method. In this
method, which has been called "solution phase space method," conserved charges
are unambiguous and regular. Moreover, assuming the generators of the charges
to be exact symmetries, entropies and other conserved charges can be calculated
on almost arbitrary surfaces, not necessarily horizons or asymptotics. Hence,
the first law of thermodynamics would be a local identity relating the exact
symmetries to which the mass, angular momentum, electric charge, and entropy
are attributed. In this paper, we apply this powerful method to the $f(R)$
gravitational theories accompanied by the terms quadratic in the Riemann and
Ricci tensors. Furthermore, conserved charges and the first law of
thermodynamics for some of their black hole solutions are exemplified. The
examples include warped AdS$_3$, charged static BTZ, and 3-dimensional $z=3$
Lifshitz black holes.

23
The categories of this paper are: solv-int
0
The categories of this paper are: hep-ph
25
The categories of this paper are: patt-sol
22
The categories of this paper are: chao-dyn
27
The categories of this paper are: comp-gas
35
The categories of this paper are: mtrl-th
31
The categories of this paper are: ao-sci
11
The categories of this paper are: hep-lat
19
The categories of this paper are: eess
36
The categories of this paper are: cmp-lg
21
The categories of this paper are: adap-org
1
The categories of this paper are: cs
14
The categories of this paper are: math-ph
26
The categories of this paper are: bayes-an
32
The categories of this paper are: atom-ph
30
The categories of this paper are: q-alg