Search Results - "Guariento, Daniel C."

Horndeski theory meets the McVittie solution: A scalar field theory for accretion onto cosmological black holes by Afshordi, Niayesh, Fontanini, Michele, Guariento, Daniel C.

“…We show that the generalized McVittie spacetime, which represents a black hole with time-dependent mass in an expanding universe, is an exact solution of a…”
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How the expansion of the Universe determines the causal structure of McVittie spacetimes by da Silva, Alan M., Fontanini, Michele, Guariento, Daniel C.

“…We present a theorem which allows one to recognize and classify the asymptotic behavior and causal structure of McVittie metrics for different choices of scale…”
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Consistency of the mass variation formula for black holes accreting cosmological fluids by Guariento, Daniel C., Horvath, J. E.

“…We address the spherical accretion of generic fluids onto black holes. We show that, if the black hole metric satisfies certain conditions, in the presence of…”
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Phantom accretion by black holes and the generalized second law of thermodynamics by Lima, J.A.S., Pereira, S.H., Horvath, J.E., Guariento, Daniel C.

“…The accretion of a phantom fluid with non-zero chemical potential by black holes is discussed with basis on the generalized second law of thermodynamics. For…”
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Evolution of primordial black holes in a radiation and phantom energy environment by Guariento, Daniel C., Horvath, J. E., de Freitas Pacheco, J. A., Custodio, P. S.

“…In this work we extend previous work on the evolution of a primordial black hole (PBH) to address the presence of a dark energy component with a super-negative…”
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Cosmological black holes and white holes with time-dependent mass by Maciel, Alan, Guariento, Daniel C., Molina, C.

“…We consider the causal structure of generalized uncharged McVittie spacetimes with increasing central mass m(t) and positive Hubble factor H(t). Under…”
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Cosmological black holes from self-gravitating fields by Abdalla, Elcio, Afshordi, Niayesh, Fontanini, Michele, Guariento, Daniel C., Papantonopoulos, Eleftherios

“…Both cosmological expansion and black holes are ubiquitous features of our observable Universe, yet exact solutions connecting the two have remained elusive…”
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Realistic fluids as source for dynamically accreting black holes in a cosmological background by Guariento, Daniel C., Fontanini, Michele, da Silva, Alan M., Abdalla, Elcio

“…We show that a single imperfect fluid can be used as a source to obtain a mass-varying black hole in an expanding universe. This approach generalizes the…”
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Separating expansion and collapse in general fluid models with heat flux by Le Delliou, Morgan, Mimoso, José P., Mena, Filipe C., Fontanini, Michele, Guariento, Daniel C., Abdalla, Elcio

“…In this paper we consider spherically symmetric general fluids with heat flux, motivated by causal thermodynamics, and give the appropriate set of conditions…”
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Analytical solutions of accreting black holes immersed in a ΛCDM model by Lima, J.A.S., Guariento, Daniel C., Horvath, J.E.

“…The evolution of the mass of a black hole embedded in a universe filled with dark energy and cold dark matter is calculated in a closed form within a test…”
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Analytical solutions of accreting black holes immersed in a CDM model by Lima, JAS, Guariento, Daniel C, Horvath, JE

“…The evolution of the mass of a black hole embedded in a universe filled with dark energy and cold dark matter is calculated in a closed form within a test…”
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Analytical solutions of accreting black holes immersed in a ACDM model by LIMA, J. A. S, GUARIENTO, Daniel C, HORVATH, J. E

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Hamiltonian analysis of the cuscuton by Gomes, Henrique, Guariento, Daniel C

“…Phys. Rev. D 95, 104049 (2017) The cuscuton was introduced in the context of cosmology as a field with infinite speed of propagation. It has been claimed to…”
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Self-gravitating fluid solutions of Shape Dynamics by Guariento, Daniel C, Mercati, Flavio

“…Phys. Rev. D 94, 064023 (2016) Shape Dynamics is a 3D conformally invariant theory of gravity which possesses a large set of solutions in common with General…”
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Charged cosmological black holes: a thorough study of a family of solutions by Guariento, Daniel C, Maciel, Alan, Mello, Marina M. C, Zanchin, Vilson T

“…Phys. Rev. D 100, 104050 (2019) We study a class of charged cosmological black holes defined by the Shah-Vaidya solution, which is similar to the McVittie…”
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Cosmological black holes and white holes with time-dependent mass by da Silva, Alan M, Guariento, Daniel C, Molina, C

“…Phys. Rev. D 91, 084043 (2015) We consider the causal structure of generalized uncharged McVittie spacetimes with increasing central mass $m (t)$ and positive…”
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Horndeski meets McVittie: A scalar field theory for accretion onto cosmological black holes by Afshordi, Niayesh, Fontanini, Michele, Guariento, Daniel C

“…Phys. Rev. D 90, 084012 (2014) We show that the generalized McVittie spacetime, which represents a black hole with time-dependent mass in an expanding…”
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How the expansion of the universe determines the causal structure of McVittie spacetimes by da Silva, Alan M, Fontanini, Michele, Guariento, Daniel C

“…Phys. Rev. D 87, 064030 (2013) We present a theorem which allows one to recognize and classify the asymptotic behavior and causal structure of McVittie metrics…”
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Cosmological black holes from self-gravitating fields by Abdalla, Elcio, Afshordi, Niayesh, Fontanini, Michele, Guariento, Daniel C, Papantonopoulos, Eleftherios

“…Phys. Rev. D 89, 104018 (2014) Both cosmological expansion and black holes are ubiquitous features of our observable Universe, yet exact solutions connecting…”
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Consistency of the mass variation formula for black holes accreting cosmological fluids by Guariento, Daniel C, Horvath, J. E

“…Gen. Rel. Grav. 44(4), 985-992 (2012) We address the spherical accretion of generic fluids onto black holes. We show that, if the black hole metric satisfies…”
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