Instruct: Identify the main and secondary category of Arxiv papers based on the titles and abstracts
Query: String-theoretic unitary S-matrix at the threshold of black-hole
  production   Previous results on trans-Planckian collisions in superstring theory are
rewritten in terms of an explicitly unitary S-matrix whose range of validity
covers a large region of the energy/impact-parameter plane. Amusingly, as part
of this region's border is approached, properties of the final state start
resembling those expected from the evaporation of a black-hole even well below
its production threshold. More specifically, we conjecture that, in an energy
window extending up such a threshold, inclusive cross sections satisfy a
peculiar "anti-scaling" behaviour seemingly preparing for a smooth transition
to black-hole physics.

15
The categories of this paper are: nucl-ex
19
The categories of this paper are: eess
35
The categories of this paper are: mtrl-th
0
The categories of this paper are: hep-ph
9
The categories of this paper are: nlin
12
The categories of this paper are: nucl-th
27
The categories of this paper are: comp-gas
37
The categories of this paper are: supr-con
23
The categories of this paper are: solv-int
10
The categories of this paper are: q-bio
24
The categories of this paper are: dg-ga
18
The categories of this paper are: econ
22
The categories of this paper are: chao-dyn
29
The categories of this paper are: funct-an
14
The categories of this paper are: math-ph
36
The categories of this paper are: cmp-lg