Quantum back reaction of massive fields and self-consistent semiclassical extreme black holes and acceleration horizons

Matyjasek, Jerzy; Заславский, О. Б.

doi:10.1103/physrevd.64.104018

Cited by 25 publications

(26 citation statements)

References 20 publications

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“…It was shown in [37], [38] that in general relativity the presence of quantum backreaction is compatible with the existence of extremal black holes. The similar conclusion was reached in [39] for 2D theories with non-conformal scalar fields.…”

Section: B Ultraextreme Black Holesmentioning

confidence: 99%

Exactly solvable models in 2D semiclassical dilaton gravity and extremal black holes

Заславский¹

2002

Class. Quantum Grav.

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Previously known exactly solvable models of 2D semiclassical dilaton gravity admit, in the general case, only non-extreme black holes. It is shown that there exist exceptional degenerate cases, that can be obtained by some limiting transitions from the general exact solution, which include, in particular, extremal and ultraextremal black holes. We also analyze properties of extreme black holes without demanding exact solvability and show that for such solutions quantum backreaction forbids the existence of ultraextreme black holes. The conditions, under which divergencies of quantum stresses in a free falling frame can disappear, are found. We derive the closed equation with respect to the metric as a function of the dilaton field that enables one, choosing the form of the metric, to restore corresponding Lagrangian. It is demonstrated that exactly solvable models, found earlier, can be extended to include an electric charge only in two cases: either the dilaton-gravitation coupling is proportional to the potential term, or the latter vanishes. The second case leads to the effective potential with a negative amplitude and we analyze, how this fact affects the structure of spacetime. We also discuss the role of quantum backreaction in the relationship between extremal horizons and the branch of solutions with a constant dilaton.

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Section: B Ultraextreme Black Holesmentioning

confidence: 99%

Exactly solvable models in 2D semiclassical dilaton gravity and extremal black holes

Заславский¹

2002

Class. Quantum Grav.

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“…It is worth mentioning that M tot < Q for backreaction of massive fields on 4D quantum-corrected extremal Reissner-Nordström black hole [13].…”

Section: Discussionmentioning

confidence: 99%

“…It is worth noting that the account for backreaction of massive fields in general relativity also gives the result that for the quantum-corrected extremal charge black hole m < q [13].…”

Section: Quantum-corrected Extreme Configurationmentioning

confidence: 98%

Near-extremal and extremal quantum-corrected two-dimensional charged black holes

Заславский¹

2004

Class. Quantum Grav.

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We consider charged black holes within dilaton gravity with exponentiallinear dependence of action coefficients on dilaton and minimal coupling to quantum scalar fields. This includes, in particular, CGHS and RST black holes in the uncharged limit. For non-extremal configuration quantum correction to the total mass, Hawking temperature, electric potential and metric are found explicitly and shown to obey the first generalized law. We also demonstrate that quantum-corrected extremal black holes in these theories do exist and correspond to the classically forbidden region of parameters in the sense that the total mass M tot < Q (Q is a charge). We show that in the limit T H → 0 (where T H is the Hawking temperature) the mass and geometry of non-extremal configuration go smoothly to those of the extremal one, except from the narrow near-horizon region. In the vicinity of the horizon the quantum-corrected geometry (however small quantum the coupling parameter κ would be) of a non-extremal configuration tends to not the quantum-corrected extremal one but to the special branch of solutions with the constant dilaton (2D analog of the Bertotti-Robinson metric) instead.Meanwhile, if κ = 0 exactly, the near-extremal configuration tends to the extremal one. We also consider the dilaton theory which corresponds classically to the spherically-symmetrical reduction from 4D case and show that for the 1 quantum-corrected extremal black hole M tot > Q.

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“…Let us note that wormholes with "tube-like" structure (and regular black holes with "tube-like" core) have been previously obtained within different contexts in refs. [41][42][43][44][45][46][47][48][49].…”

Section: Introductionmentioning

confidence: 99%

“…Therefore, the "right universe" in both cases turns out to be the exterior region of the electrically neutral Schwarzschild-de-Sitter black hole beyond the Schwarzschild horizon which carries a vacuum constant radial electric field | F v |= f 2 . On the other hand, according to (45), (46) and (45), (49) …”

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confidence: 99%

Hiding Charge in a Wormhole

Guendelman

2011

TONPPJ

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Existence of wormholes can lead to a host of new effects like Misner-Wheeler "charge without charge" effect, where without being generated by any source an electric flux arrives from one "universe" and flows into the other "universe". Here we show the existence of an intriguing opposite possibility. Namely, a charged object (a charged lightlike brane in our case) sitting at the wormhole "throat" expels all the flux it produces into just one of the "universes", which turns out to be of compactified ("tube-like") nature. An outside observer in the non-compact "universe" detects, therefore, a neutral object. This charge-hiding effect takes place in a gravity/gauge-field system self-consistently interacting with a charged lightlike brane as a matter source, where the gauge field subsystem is of a special non-linear form containing a square-root of the Maxwell term and which previously has been shown to produce a QCD-like confining gauge field dynamics in flat space-time.PACS: 11.25.-w 04.70.-s 04.50.+h.

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Quantum back reaction of massive fields and self-consistent semiclassical extreme black holes and acceleration horizons

Cited by 25 publications

References 20 publications

Exactly solvable models in 2D semiclassical dilaton gravity and extremal black holes

Exactly solvable models in 2D semiclassical dilaton gravity and extremal black holes

Near-extremal and extremal quantum-corrected two-dimensional charged black holes

Hiding Charge in a Wormhole

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