2009
DOI: 10.1103/physrevd.80.104018
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Accretion of nonminimally coupled scalar fields into black holes

Abstract: By using a quasi-stationary approach, we consider the mass evolution of Schwarzschild black holes in the presence of a nonminimally coupled cosmological scalar field. The mass evolution equation is analytically solved for generic coupling, revealing a qualitatively distinct behavior from the minimal coupling case. In particular, for black hole masses smaller than a certain critical value, the accretion of the scalar field can lead to mass decreasing even if no phantom energy is involved. The physical validity … Show more

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Cited by 17 publications
(19 citation statements)
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“…Exact solutions of dynamical black holes include the McVittie metric [44], which is simply SdS in cosmological coordinates in the most physical case, and examples of maximally charged multi-cosmological black holes both without [45] and with scalar fields [46]. Accretion of fields and growth of cosmological black holes has been studied in different approximations and numerically, addressing scalar field cosmologies, generalizing the properties of Killing black holes, and the dynamics of accretion [31,38,[47][48][49][50][51][52][53][54][55][56][57][58][59][60][61][62].…”
Section: Schwarzschild-quasi De Sitter Spacetimesmentioning
confidence: 99%
“…Exact solutions of dynamical black holes include the McVittie metric [44], which is simply SdS in cosmological coordinates in the most physical case, and examples of maximally charged multi-cosmological black holes both without [45] and with scalar fields [46]. Accretion of fields and growth of cosmological black holes has been studied in different approximations and numerically, addressing scalar field cosmologies, generalizing the properties of Killing black holes, and the dynamics of accretion [31,38,[47][48][49][50][51][52][53][54][55][56][57][58][59][60][61][62].…”
Section: Schwarzschild-quasi De Sitter Spacetimesmentioning
confidence: 99%
“…a e-mail: saulo.carneiro.ufba@gmail.com observations [25]. Accretion of scalar fields into blackholes was studied, for example, in [26].A minimally coupled scalar field has energy-momentum tensorwhere V (φ) is the self-interaction potential. We can formally decompose it into pressureless and "vacuum" components…”
mentioning
confidence: 99%
“…In this scenario, the cosmological phantom field disrupts finally all bounded objects of the universe up to sub-nuclear scales. For the test-field approximation, one may find the accretion process of a scalar field violating the energy conditions leading the decrease in the black holes area in [98,100]. Moreover, the shrink of the black hole area through the accretion of a phantom scalar field has been confirmed in full nonlinear general relativity [101,102].…”
Section: Introductionmentioning
confidence: 98%