Scattering of quantum particles by gravitational plane waves

Details Scattering of quantum particles by gravitational plane waves Scattering of quantum particles by gravitational plane waves

Jan 1991

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1991phrvd..43..391g&link_type=abstract

Physical Review D (Particles and Fields), Volume 43, Issue 2, 15 January 1991, pp.391-401

Physics

35

Scientific paper

We consider the coupling of quantum massless and massive scalar particles with exact gravitational plane waves. The cross section for scattering of the quantum particles by the waves is shown to coincide with the classical cross section for scattering of geodesics. The expectation value of the scalar field stress tensor between scattering states diverges at the points where classical test particles focus after colliding with the wave. This indicates that back-reaction effects cannot be ignored for plane waves propagating in the presence of quantum particles and that classical singularities are likely to develop.

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