Instruct: Identify the main and secondary category of Arxiv papers based on the titles and abstracts
Query: Energy and Angular Momentum in Generic F(Riemann) Theories   We construct the conserved charge of generic gravity theories built on
arbitrary contractions of the Riemann tensor (but not on its derivatives) for
asymptotically (anti)-de Sitter spacetimes. Our construction is a
generalization of the ADT charges of linear and quadratic gravity theories in
cosmological backgrounds. As an explicit example we find the energy and angular
momentum of the BTZ black hole in the 2+1 dimensional Born-Infeld gravity.

13
The categories of this paper are: quant-ph
20
The categories of this paper are: acc-phys
22
The categories of this paper are: chao-dyn
30
The categories of this paper are: q-alg
4
The categories of this paper are: cond-mat
2
The categories of this paper are: math
33
The categories of this paper are: plasm-ph
25
The categories of this paper are: patt-sol
9
The categories of this paper are: nlin
8
The categories of this paper are: hep-ex
6
The categories of this paper are: astro-ph
16
The categories of this paper are: stat
34
The categories of this paper are: chem-ph
10
The categories of this paper are: q-bio
12
The categories of this paper are: nucl-th
14
The categories of this paper are: math-ph