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Please use this identifier to cite or link to this item: https://hdl.handle.net/2445/12408

Scattering of quantum particles by gravitational plane waves

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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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GARRIGA TORRES, Jaume and VERDAGUER OMS, Enric. Scattering of quantum particles by gravitational plane waves. Physical Review D. 1991. Vol. 43, num. 2, pags. 391-401. ISSN 0556-2821. [consulted: 8 of June of 2026]. Available at: https://hdl.handle.net/2445/12408

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