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ACCRETION OF NONMINIMALLY COUPLED GENERALIZED CHAPLYGIN GAS INTO BLACK HOLES

Centro de Ciências Naturais e Humanas, Universidade Federal do ABC, Rua Santa Adélia, 166, 09.210-170, Santo André, SP, Brazil

Instituto de Física Gleb Wataghin, UNICAMP, PO Box 6165, 13083-970, Campinas, SP, Brazil

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and

A. E. BERNARDINI

Departamento de Física, Universidade Federal de São Carlos, PO Box 676, 13565-905, São Carlos, SP, Brazil

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https://doi.org/10.1142/S0218271812500757Cited by:12 (Source: Crossref)

Abstract

The mass evolution of Schwarzschild black holes by the absorption of scalar fields is investigated in the scenario of the generalized Chaplygin gas (GCG). The GCG works as a unification picture of dark matter plus dark energy that naturally accelerates the expansion of the Universe. Through elements of the quasi-stationary approach, we consider the mass evolution of Schwarzschild black holes accreted by nonminimally coupled cosmological scalar fields reproducing the dynamics of the GCG. As a scalar field nonminimally coupled to the metrics, such an exotic content has been interconnected with accreting black holes. The black hole increasing masses by the absorption of the gas reflects some consistence of the accretion mechanism with the hypothesis of the primordial origin of supermassive black holes. Our results effectively show that the nonminimal coupling with the GCG dark sector accelerates the increasing of black hole masses. Meanwhile some exotic features can also be depicted for specific ranges of the nonminimal coupling in which the GCG dynamics is substantially modified.

Keywords:

PACS: 04.40.Nr, 04.70.Dy, 95.35+d, 95.30.Cq, 97.20.Vs, 98.35.Gi, 98.62.Gq, 98.80.Cq, 95.36.+x, 98.80.-k

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