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Cosmic GREA from SMBH growth

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arxiv 2306.10593 v1 pith:MHJM5NHO submitted 2023-06-18 gr-qc astro-ph.CO

classification gr-qcastro-ph.CO
keywords accelerationgeneraluniverseaccretionblackentropicgreaholes
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General Relativistic Entropic Acceleration (GREA) gives a general framework in which to study multiple out-of-equilibrium phenomena in the context of general relativity, like the late accelerated expansion of the universe or the formation of galaxies and the large scale structure of the universe. Here we study the consequences of mass accretion onto massive Black Holes. We find that a population of Super Massive Black Holes (SMBH) whose mass grows significantly due to accretion can act as a source of entropic acceleration and constitute a significant part of the present acceleration of the Universe.

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Cited by 1 Pith paper

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  1. Evaporating cosmologically coupled black holes

    astro-ph.CO 2026-07 conditional novelty 6.0 of 10

    If a black hole's mass grows with cosmic expansion, Hawking evaporation is slowed or reversed, weakening gamma-ray bounds on primordial black holes.

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