Exploring an S-matrix for gravitational collapse

Details Exploring an S-matrix for gravitational collapse Exploring an S-matrix for gravitational collapse

2008-04-21

arxiv.org/abs/0804.3321v1

JHEP0809:023,2008

Physics

High Energy Physics

High Energy Physics - Theory

15 pages, 6 figures

Scientific paper

10.1088/1126-6708/2008/09/023

We analyze further a recently proposed S-matrix description of transplanckian scattering in the specific case of axisymmetric collisions of extended sources, where some of the original approximations are not necessary. We confirm the claim that such an approximate description appears to capture the essential features of (the quantum counterpart of) classical gravitational collapse. More specifically, the S-matrix develops singularities whose location in the sources' parameter space are consistent with (and numerically close to) the bounds coming from closed-trapped-surface collapse criteria. In the vicinity of the critical "lines" the phase of the elastic S-matrix exhibits a universal fractional-power behaviour reminiscent of Choptuik's scaling near critical collapse.

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