Growth of primordial black holes in a universe containing a massless scalar field

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dc.creatorHarada, Tomohiro
dc.creatorCarr, B. J.
dc.date2004-12-06
dc.date2005-05-11
dc.date.accessioned2026-07-07T11:03:48Z
dc.date.available2026-07-07T11:03:48Z
dc.descriptionThe evolution of primordial black holes in a flat Friedmann universe with a massless scalar field is investigated in fully general relativistic numerical relativity. A primordial black hole is expected to form with a scale comparable to the cosmological apparent horizon, in which case it may go through an initial phase with significant accretion. However, if it is very close to the cosmological apparent horizon size, the accretion is suppressed due to general relativistic effects. In any case, it soon gets smaller than the cosmological horizon and thereafter it can be approximated as an isolated vacuum solution with decaying mass accretion. In this situation the dynamical and inhomogeneous scalar field is typically equivalent to a perfect fluid with a stiff equation of state $p=ρ$. The black hole mass never increases by more than a factor of two, despite recent claims that primordial black holes might grow substantially through accreting quintessence. It is found that the gravitational memory scenario, proposed for primordial black holes in Brans-Dicke and scalar-tensor theories of gravity, is highly unphysical.
dc.description24 pages, accepted for publication in Physical Review D
dc.identifierhttps://arxiv.org/abs/astro-ph/0412135
dc.identifierhttp://arxiv.org/abs/astro-ph/0412135
dc.identifierPhys.Rev.D71:104010,2005
dc.identifierdoi:10.1103/PhysRevD.71.104010
dc.identifier.urihttp://salesiana.dossiersoluciones.com/handle/123456789/188671
dc.subjectAstrophysics
dc.subjectGeneral Relativity and Quantum Cosmology
dc.subjectHigh Energy Physics - Theory
dc.titleGrowth of primordial black holes in a universe containing a massless scalar field
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