Instruct: Identify the main and secondary category of Arxiv papers based on the titles and abstracts
Query: Black holes, first-order flow equations and geodesics on symmetric
  spaces   For both extremal and non-extremal spherically symmetric black holes in
theories with massless scalars and vectors coupled to gravity, we derive a
general form of first-order gradient flow equations, equivalent to the
equations of motion. For theories that have a symmetric moduli space after a
dimensional reduction over the timelike direction, we discuss the condition for
such a gradient flow to exist.
  This note reviews the results of arXiv:0810.1528 [hep-th].

22
The categories of this paper are: chao-dyn
29
The categories of this paper are: funct-an
8
The categories of this paper are: hep-ex
4
The categories of this paper are: cond-mat
37
The categories of this paper are: supr-con
20
The categories of this paper are: acc-phys
25
The categories of this paper are: patt-sol
14
The categories of this paper are: math-ph
24
The categories of this paper are: dg-ga
27
The categories of this paper are: comp-gas
13
The categories of this paper are: quant-ph
32
The categories of this paper are: atom-ph
3
The categories of this paper are: physics
16
The categories of this paper are: stat
9
The categories of this paper are: nlin
30
The categories of this paper are: q-alg