Электронный каталог

Статья

Fursaev, D.V.
Perturbations of Classical Fields by Gravitational Shockwaves / D.V.Fursaev, E.A.Davydov, I.G.Pirozhenko, V.A.Tainov // Journal of High Energy Physics [Electronic resource]. – 2024. – Vol. 2024, No. 11. – P. 039. – URL: https://doi.org/10.1007/JHEP11(2024)039. – Bibliogr.: 43.

Gravitational shockwaves are geometries where components of the transverse curvature have abrupt behaviour across null hypersurfaces, which are fronts of the waves. We develop a general approach to describe classical field theories on such geometries in a linearized approximation, by using free scalar fields as a model. Perturbations caused by shockwaves exist above the wave front and are solutions to a characteristic Cauchy problem with initial data on the wave front determined by a supertranslation of ingoing fields. A special attention is paid to perturbations of fields of point-like sources generated by plane-fronted gravitational shockwaves. One has three effects: conversion of non-stationary perturbations into an outgoing radiation, a spherical scalar shockwave which appears when the gravitational wave hits the source, and a plane scalar shockwave accompanying the initial gravitational wave. Our analysis is applicable to gravitational shockwaves of a general class including geometries sourced by null particles and null branes.



ОИЯИ = ОИЯИ (JINR)2024
Спец.(статьи,препринты) = С 322.2 - Космология. Гравитационные волны