Instruct: Identify the main and secondary category of Arxiv papers based on the titles and abstracts
Query: Trap Surface Formation in High-Energy Black Holes Collision   We investigate classical formation of a trap surface in $D$-dimensional
Einstein gravity in the process of a head-on collision of two high-energy
particles, which are treated as Aichelburg-Sexl shock waves. From the condition
of the trap surface volume local maximality we deduce an explicit form of the
inner trap surface. Imposing the continuity condition on the fronts we obtain a
time-dependent solution for the trap surface. We discuss trap surface
appearance and evolution.

12
The categories of this paper are: nucl-th
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The categories of this paper are: acc-phys
0
The categories of this paper are: hep-ph
5
The categories of this paper are: gr-qc
26
The categories of this paper are: bayes-an
33
The categories of this paper are: plasm-ph
1
The categories of this paper are: cs
25
The categories of this paper are: patt-sol
23
The categories of this paper are: solv-int
31
The categories of this paper are: ao-sci
34
The categories of this paper are: chem-ph
3
The categories of this paper are: physics
32
The categories of this paper are: atom-ph
16
The categories of this paper are: stat
37
The categories of this paper are: supr-con
14
The categories of this paper are: math-ph