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Primordial black hole evolution in tensor-scalar cosmology

Ted Jacobson
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Abstract

A perturbative analysis shows that black holes do not remember the value of the scalar field $ϕ$ at the time they formed if $ϕ$ changes in tensor-scalar cosmology. Moreover, even when the black hole mass in the Einstein frame is approximately unaffected by the changing of $ϕ$, in the Jordan-Fierz frame the mass increases. This mass increase requires a reanalysis of the evaporation of primordial black holes in tensor-scalar cosmology. It also implies that there could have been a significant magnification of the (Jordan-Fierz frame) mass of primordial black holes.

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Ted Jacobson. 1999-09-06. Primordial black hole evolution in tensor-scalar cosmology. https://doi.org/10.1103/physrevlett.83.2699

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