Instruct: Identify the main and secondary category of Arxiv papers based on the titles and abstracts
Query: Analytical expressions for greybody factor and dynamic evolution for
  scalar field in Ho\v{r}ava-Lifshitz black hole   We investigate the propagation and evolution for a massless scalar field in
the background of $\lambda=1/2$ Ho\v{r}ava-Lifshitz black hole with the
condition of detailed balance. We fortunately obtain an exact solution for the
Klein-Gordon equation. Then, we find an analytical expression for the greybody
factor which is valid for any frequency; and also exactly show that the
perturbation decays without any oscillation. All of these can help us to
understand more about the Ho\v{r}ava-Lifshitz gravity.

22
The categories of this paper are: chao-dyn
24
The categories of this paper are: dg-ga
28
The categories of this paper are: alg-geom
3
The categories of this paper are: physics
14
The categories of this paper are: math-ph
17
The categories of this paper are: q-fin
0
The categories of this paper are: hep-ph
23
The categories of this paper are: solv-int
2
The categories of this paper are: math
29
The categories of this paper are: funct-an
4
The categories of this paper are: cond-mat
27
The categories of this paper are: comp-gas
19
The categories of this paper are: eess
6
The categories of this paper are: astro-ph
26
The categories of this paper are: bayes-an
25
The categories of this paper are: patt-sol