Graviatoms with de Sitter Interior

Dymnikova, Irina; Fil'chenkov, M. L.

doi:10.1155/2013/746894

Cited by 14 publications

(29 citation statements)

References 73 publications

(136 reference statements)

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“…Regular primordial black holes (RPBH), their remnants and gravitational solitons G-lumps with de Sitter vacuum interiors can arise during first and second, E in f l = E QCD [75] inflationary stages in a quantum collapse of primordial fluctuations. Probability of tunnelling in a collapse is given by [76] …”

Section: Summary and Discussionmentioning

confidence: 99%

“…At the first inflation, E in f l = E GUT , regular objects with the interior de Sitter vacuum E int = E GUT can arise with masses M > 10 11 g. For E int = E Pl any mass is possible, as well as for regular objects arising at the second inflationary stage. RPBHs, their remnants and G-lumps can capture available charged particles and form graviatoms ( [76] and references therein)-gravitationally bound (α G = GMm/hc) quantum systems with captured particles. Conditions of the existence of graviatoms [76] constrain the masses of captured particles by m > 10 9 GeV for E int = E GUT .…”

Section: Summary and Discussionmentioning

confidence: 99%

“…RPBHs, their remnants and G-lumps can capture available charged particles and form graviatoms ( [76] and references therein)-gravitationally bound (α G = GMm/hc) quantum systems with captured particles. Conditions of the existence of graviatoms [76] constrain the masses of captured particles by m > 10 9 GeV for E int = E GUT . This can be (i) heavy particles captured at the reheating stage after the first inflation and (ii) leptoquarks survived in galactic haloes [77,78].…”

Section: Summary and Discussionmentioning

confidence: 99%

“…Most promising is the oscillatory electromagnetic radiation of graviatom whose characteristic frequency depends on the scale E int of the interior de Sitter vacuum [76]. For the density profile (4),hω = 0.678hc/r deS = 0.678 × 10 11 GeV (E int /E GUT ) 2 .…”

Section: Summary and Discussionmentioning

confidence: 99%

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Generic Features of Thermodynamics of Horizons in Regular Spherical Space-Times of the Kerr-Schild Class

Dymnikova

2018

Universe

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Abstract:We present a systematic review of thermodynamics of horizons in regular spherically symmetric spacetimes of the Kerr-Schild class, ds 2 = g(r)dt 2 − g −1 (r)dr 2 − r 2 dΩ 2 , both asymptotically flat and with a positive background cosmological constant λ. Regular solutions of this class have obligatory de Sitter center. A source term in the Einstein equations satisfies T t t = T r r and represents an anisotropic vacuum dark fluid (p r = −ρ), defined by the algebraic structure of its stress-energy tensor, which describes a time-evolving and spatially inhomogeneous, distributed or clustering, vacuum dark energy intrinsically related to space-time symmetry. In the case of two vacuum scales it connects smoothly two de Sitter vacua, 8πGTIn the range of the mass parameter M cr1 ≤ M ≤ M cr2 it describes a regular cosmological black hole directly related to a vacuum dark energy. Space-time has at most three horizons: a cosmological horizon r c , a black hole horizon r b < r c , and an internal horizon r a < r b , which is the cosmological horizon for an observer in the internal R-region asymptotically de Sitter as r → 0. Asymptotically flat regular black holes (λ = 0) can have at most two horizons, r b and r a . We present the basic generic features of thermodynamics of horizons revealed with using the Padmanabhan approach relevant for a multi-horizon space-time with a non-zero pressure. Quantum evaporation of a regular black hole involves a phase transition in which the specific heat capacity is broken and changes sign while a temperature achieves its maximal value, and leaves behind the thermodynamically stable double-horizon (r a = r b ) remnant with zero temperature and positive specific heat. The mass of objects with the de Sitter center is generically related to vacuum dark energy and to breaking of space-time symmetry. In the cosmological context space-time symmetry provides a mechanism for relaxing cosmological constant to a certain non-zero value. We discuss also observational applications of the presented results.

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Section: Summary and Discussionmentioning

confidence: 99%

Section: Summary and Discussionmentioning

confidence: 99%

Section: Summary and Discussionmentioning

confidence: 99%

Section: Summary and Discussionmentioning

confidence: 99%

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Generic Features of Thermodynamics of Horizons in Regular Spherical Space-Times of the Kerr-Schild Class

Dymnikova

2018

Universe

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“…Primordial black holes can form on different stages in the early Universe provided that mass contained under its gravitational radius is sufficient for a collapse into a black hole [8,48]. Regular primordial black holes with de Sitter interior appear when a quantum collapse of a primordial fluctuation does not lead to formation of a central singularity but stops at achieving, for a certain high density, the state p = −ρ ( [35] and references therein).…”

Section: Introductionmentioning

confidence: 99%

Regular black hole remnants and graviatoms with de Sitter interior as heavy dark matter candidates probing inhomogeneity of early universe

Dymnikova

Khlopov

2015

Int. J. Mod. Phys. D

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We address the question of regular primordial black holes with de Sitter interior, their remnants and gravitational vacuum solitons G-lumps as heavy dark matter candidates providing signatures for inhomogeneity of early Universe, which is severely constrained by the condition that the contribution of these objects in the modern density doesn't exceed the total density of dark matter. Primordial black holes and their remnants seem to be most elusive among dark matter candidates. However, we reveal a nontrivial property of compact objects with de Sitter interior to induce proton decay or decay of neutrons in neutron stars. The point is that they can form graviatoms, binding electrically charged particles. Their observational signatures as dark matter candidates provide also signatures for inhomogeneity of the early Universe. In graviatoms the cross section of the induced proton decay is strongly enhanced, what provides the possibility of their experimental searches. We predict proton decay paths induced by graviatoms in the matter as an observational signature for heavy dark matter searches at the IceCUBE experiment.

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Regular Rotating Black Holes and Solitons with the de Sitter/Phantom Interiors

Dymnikova

2023

Springer Series in Astrophysics and Cosmology

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Graviatoms with de Sitter Interior

Cited by 14 publications

References 73 publications

Generic Features of Thermodynamics of Horizons in Regular Spherical Space-Times of the Kerr-Schild Class

Generic Features of Thermodynamics of Horizons in Regular Spherical Space-Times of the Kerr-Schild Class

Regular black hole remnants and graviatoms with de Sitter interior as heavy dark matter candidates probing inhomogeneity of early universe

Regular Rotating Black Holes and Solitons with the de Sitter/Phantom Interiors

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