Results 21 to 30 of about 9,449,404 (314)
Construction of inflationary scenarios with the Gauss–Bonnet term and nonminimal coupling
European Physical Journal C: Particles and Fields, 2021 Inflationary models with a scalar field nonminimally coupled both with the Ricci scalar and with the Gauss–Bonnet term are studied. We propose the way of generalization of inflationary scenarios with the Gauss–Bonnet term and a scalar field minimally ...
Ekaterina O. Pozdeeva, Sergey Yu. Vernov
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Black holes and binary mergers in scalar Gauss-Bonnet gravity: Scalar field dynamics [PDF]
Physical Review D, 2018 We study the nonlinear dynamics of black holes that carry scalar hair and binaries composed of such black holes. The scalar hair is due to a linear or exponential coupling between the scalar and the Gauss--Bonnet invariant.
Helvi Witek +3 more
semanticscholar +1 more source
Long-Range Scalar Forces in Five-Dimensional General Relativity
Advances in Mathematical Physics, 2020 We present new results regarding the long-range scalar field that emerges from the classical Kaluza unification of general relativity and electromagnetism.
L. L. Williams
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European Physical Journal C: Particles and Fields, 2018 With a suitable decomposition of its energy-momentum tensor into pressureless matter and a vacuum type term, we investigate the spherical gravitational collapse of a minimally coupled, self-interacting scalar field, showing that it collapses to a ...
S. Carneiro, J. C. Fabris
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Quantization of Einstein-aether scalar field cosmology
European Physical Journal C: Particles and Fields, 2021 We present, for the first time, the quantization process for the Einstein-aether scalar field cosmology. We consider a cosmological theory proposed as a Lorentz violating inflationary model, where the aether and scalar fields interact through the ...
N. Dimakis +5 more
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On Mass Spectra of Primordial Black Holes
Frontiers in Astronomy and Space Sciences, 2021 Evidence for the primordial black holes (PBH) presence in the early Universe renews permanently. New limits on their mass spectrum challenge existing models of PBH formation.
Alexander A. Kirillov +2 more
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Weak cosmic censorship conjecture in Kerr-(anti-)de Sitter black hole with scalar field [PDF]
Journal of High Energy Physics, 2018 We investigate the weak cosmic censorship conjecture in Kerr-(anti-)de Sitter black holes under the scattering of a scalar field. We test the conjecture in terms of whether the black hole can exceed the extremal condition with respect to its change ...
Bogeun Gwak
semanticscholar +1 more source
Analytic solutions in Einstein-aether scalar field cosmology
European Physical Journal C: Particles and Fields, 2020 In the context of Einstein-aether scalar field cosmology we solve the field equations and determine exact and analytic solutions. In particular, we consider a model proposed by Kanno and Soda where the aether and the scalar fields interact through the ...
Andronikos Paliathanasis, Genly Leon
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Strong cosmic censorship for the massless charged scalar field in the Reissner-Nordstrom–de Sitter spacetime [PDF]
Physical Review D, 2018 It has recently been shown that the strong cosmic censorship conjecture can be violated by the massless neutral scalar field in the nearly extremal Reissner-Nordstrom--de Sitter black hole.
Yuyu Mo +4 more
semanticscholar +1 more source
Universe, 2023 We discuss the problem of the quantization and dynamic evolution of a scalar free field in the interior of a Schwarzschild black hole. A unitary approach to the dynamics of the quantized field is proposed: a time-dependent Hamiltonian governing the ...
Pawel Gusin +5 more
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