Results 31 to 40 of about 707,832 (374)
Globally visible singularity in an astrophysical setup [PDF]
Monthly notices of the Royal Astronomical Society, 2021 The global visibility of a singularity as an end state of the gravitational collapse of a spherically symmetric pressureless cloud is investigated.
Karim Mosani, D. Dey, P. Joshi
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Ascribing quantum system to Schwarzschild spacetime with naked singularity [PDF]
Classical and quantum gravity, 2021 We quantize the Schwarzschild spacetime with naked singularity using the affine coherent states quantization method. The novelty of our approach is quantization of both temporal and spatial coordinates.
A. G'o'zd'z, A. Pȩdrak, W. Piechocki
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Singular Monopoles and Gravitational Instantons [PDF]
Communications in Mathematical Physics, 1999 We model A_k and D_k asymptotically locally flat gravitational instantons on the moduli spaces of solutions of U(2) Bogomolny equations with prescribed singularities. We study these moduli spaces using Ward correspondence and find their twistor description.
Cherkis, Sergey A., Kapustin, Anton
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Quantum dynamics corresponding to the chaotic BKL scenario
European Physical Journal C: Particles and Fields, 2023 We quantize the solution to the Belinski– Khalatnikov–Lifshitz (BKL) scenario using the integral quantization method. Quantization smears the gravitational singularity, preventing its localization in the configuration space.
Andrzej Góźdź +2 more
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A gravitational collapse singularity theorem consistent with black hole evaporation [PDF]
Letters in Mathematical Physics, 2019 The global hyperbolicity assumption present in gravitational collapse singularity theorems is in tension with the quantum mechanical phenomenon of black hole evaporation.
E. Minguzzi
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The eternal naked singularity formation in the case of gravitational collapse of generalized Vaidya space–time [PDF]
International Journal of Modern Physics A, 2018 In this paper, we consider the gravitational collapse of generalized Vaidya space–time when the matter satisfies the equation of the state either [Formula: see text] or [Formula: see text], where [Formula: see text].
Vitalii D. Vertogradov
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Gravitational field of slightly deformed naked singularities
European Physical Journal C: Particles and Fields, 2022 We derive a particular approximate solution of Einstein equations, describing the gravitational field of a mass distribution that slightly deviates from spherical symmetry. The deviation is described by means of a quadrupole parameter that is responsible
Saken Toktarbay +3 more
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The nature of the naked singularity in generalized Vaidya spacetime and white hole geodesics
Physics of Complex Systems, 2021 This paper gives conditions to the energy-momentum tensor when the gravitational collapse of generalized Vaidya spacetime results in a naked singularity.
Виталий Дмитриевич Вертоградов
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Leading singularities and classical gravitational scattering [PDF]
Journal of High Energy Physics, 2020 Abstract In this work we propose to use leading singularities to obtain the classical pieces of amplitudes of two massive particles whose only interaction is gravitational. Leading singularities are generalizations of unitarity cuts.
Alfredo Guevara +3 more
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Cosmology from Newton–Chern–Simons gravity
Nuclear Physics B, 2020 We study a five-dimensional non-relativistic gravity theory whose action is composed of a gravitational sector and a sector of matter where the gravitational sector is given by the so called Newton–Chern–Simons gravity and where the matter sector is ...
S. Lepe, G. Rubio, P. Salgado
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