Tolman-Bondi collapse in scalar-tensor theories as a probe of gravitational memory

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dc.creatorHarada, T.
dc.creatorGoymer, C.
dc.creatorCarr, B. J.
dc.date2001-12-31
dc.date2002-10-08
dc.date.accessioned2026-07-07T11:08:03Z
dc.date.available2026-07-07T11:08:03Z
dc.descriptionIn cosmological models with a varying gravitational constant, it is not clear whether primordial black holes preserve the value of $G$ at their formation epoch. We investigate this question by using the Tolman-Bondi model to study the evolution of a background scalar field when a black hole forms from the collapse of dust in a flat Friedmann universe. Providing the back reaction of the scalar field on the metric can be neglected, we find that the value of the scalar field at the event horizon very quickly assumes the background cosmological value. This suggests that there is very little gravitational memory.
dc.description17 pages, 7 figures, submitted to Physical Review D, latex2e
dc.identifierhttps://arxiv.org/abs/astro-ph/0112563
dc.identifierhttp://arxiv.org/abs/astro-ph/0112563
dc.identifierPhys.Rev.D66:104023,2002
dc.identifierdoi:10.1103/PhysRevD.66.104023
dc.identifier.urihttp://salesiana.dossiersoluciones.com/handle/123456789/190007
dc.subjectAstrophysics
dc.subjectGeneral Relativity and Quantum Cosmology
dc.titleTolman-Bondi collapse in scalar-tensor theories as a probe of gravitational memory
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