Instruct: Identify the main and secondary category of Arxiv papers based on the titles and abstracts
Query: Confined Penrose process with charged particles   We show that kinematics of charged particles allows us to model the growth of
particles' energy by consecutive particle-splits, once a spherical mirror as a
perfectly reflective boundary is placed outside a charged black hole. We
consider a charged version of the Penrose process, in which a charged particle
decays into two fragments, one of them has negative energy and the other has
positive energy that is larger than that of the parent particle. The
confinement system with the mirror makes the particles' energy amplified each
time a split of the parent particle occurs. Thus, the energy is a monotonically
increasing function of time. However, the energy does not increase unboundedly,
but rather asymptotes to a certain finite value, implying no instability of the
system in this respect.

22
The categories of this paper are: chao-dyn
29
The categories of this paper are: funct-an
7
The categories of this paper are: hep-th
14
The categories of this paper are: math-ph
1
The categories of this paper are: cs
20
The categories of this paper are: acc-phys
37
The categories of this paper are: supr-con
24
The categories of this paper are: dg-ga
30
The categories of this paper are: q-alg
25
The categories of this paper are: patt-sol
13
The categories of this paper are: quant-ph
36
The categories of this paper are: cmp-lg
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The categories of this paper are: eess
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The categories of this paper are: q-fin
35
The categories of this paper are: mtrl-th
27
The categories of this paper are: comp-gas