Instruct: Identify the main and secondary category of Arxiv papers based on the titles and abstracts
Query: Collisional Penrose process with spinning particles in braneworld black
  hole   The Penrose process of an extremal braneworld black hole is studied. We
analyze the Penrose process by two massive spinning particles collide near the
horizon. By calculating the maximum energy extraction efficiency of this
process, it turns out that the maximal efficiency increases as the tilde charge
parameter $d$ of the braneworld blackhole decreases. Interestingly, for the
negative value of $d$, the efficiency can be even larger than the Kerr case.

2
The categories of this paper are: math
30
The categories of this paper are: q-alg
37
The categories of this paper are: supr-con
16
The categories of this paper are: stat
24
The categories of this paper are: dg-ga
8
The categories of this paper are: hep-ex
11
The categories of this paper are: hep-lat
29
The categories of this paper are: funct-an
13
The categories of this paper are: quant-ph
12
The categories of this paper are: nucl-th
26
The categories of this paper are: bayes-an
18
The categories of this paper are: econ
7
The categories of this paper are: hep-th
33
The categories of this paper are: plasm-ph
17
The categories of this paper are: q-fin
27
The categories of this paper are: comp-gas