Instruct: Identify the main and secondary category of Arxiv papers based on the titles and abstracts
Query: Towards the uniqueness of Lifshitz black holes and solitons in New
  Massive Gravity   We prove that the z=1 and z=3 Lifshitz black hole solutions of New Massive
Gravity in three dimensions are the only static axisymmetric solutions that can
be cast in a Kerr-Schild form with a seed metric given by the Lifshitz
spacetime. Correspondingly, we study the issue of uniqueness of Lifshitz
solitons when considering an ansatz involving a single metric function. We show
this problem can be mapped to the previous one and that the z=1 and z=1/3
Lifshitz soliton solutions are the only ones within this class. Finally, our
approach suggests for the first time an explanation as to what is special about
those particular values of the dynamical critical exponent z at finite
temperature.

11
The categories of this paper are: hep-lat
16
The categories of this paper are: stat
8
The categories of this paper are: hep-ex
32
The categories of this paper are: atom-ph
0
The categories of this paper are: hep-ph
34
The categories of this paper are: chem-ph
2
The categories of this paper are: math
37
The categories of this paper are: supr-con
24
The categories of this paper are: dg-ga
28
The categories of this paper are: alg-geom
31
The categories of this paper are: ao-sci
15
The categories of this paper are: nucl-ex
19
The categories of this paper are: eess
6
The categories of this paper are: astro-ph
35
The categories of this paper are: mtrl-th
1
The categories of this paper are: cs