Black holes and beyond

Mathur, Samir D.

doi:10.1016/j.aop.2012.05.001

Cited by 61 publications

(83 citation statements)

References 87 publications

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“…Note that this gives a derivation of the coarse-grained results of the Hawking calculation for b that also implies corrections for the fine-grained part. This comment is similar to a crucial ingredient of fuzzball complementarity [35], though we limit its scope to observations outside the horizon.…”

Section: Should the Calculation Of The Hawking Flux Still Hold?mentioning

confidence: 99%

Gauge-Gravity Duality and the Black Hole Interior

2013

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We present a further argument that typical black holes with field theory duals have firewalls at the horizon. This argument makes no reference to entanglement between the black hole and any distant system, and so is not evaded by identifying degrees of freedom inside the black hole with those outside. We also address the ER=EPR conjecture of Maldacena and Susskind, arguing that the correlations in generic highly entangled states cannot be geometrized as a smooth wormhole.

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Section: Should the Calculation Of The Hawking Flux Still Hold?mentioning

confidence: 99%

Gauge-Gravity Duality and the Black Hole Interior

2013

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“…The most successful approach to constructing such structure, passing all of the above tests, is the fuzzball programme in string theory [19][20][21][22][23][24]. In this programme one often considers semi-classical microstates, which are well-described within supergravity.…”

Section: Jhep02(2016)073mentioning

confidence: 99%

Non-BPS multi-bubble microstate geometries

Bena

Bossard

Katmadas

et al. 2016

J. High Energ. Phys.

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Abstract:We construct the first smooth horizonless supergravity solutions that have two topologically-nontrivial three-cycles supported by flux, and that have the same mass and charges as a non-extremal D1-D5-P black hole. Our configurations are solutions to sixdimensional ungauged supergravity coupled to a tensor multiplet, and uplift to solutions of Type IIB supergravity. The solutions represent multi-center generalizations of the non-BPS solutions of Jejjala, Madden, Ross, and Titchener, which have over-rotating angular momenta. By adding an additional Gibbons-Hawking center, we succeed in lowering one of the two angular momenta below the cosmic censorship bound, and bringing the other very close to this bound. Our results demonstrate that it is possible to construct multi-center horizonless solutions corresponding to non-extremal black holes, and offer the prospect of ultimately establishing that finite-temperature black holes have nontrivial structure at the horizon.

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“…The connections between the ergo-region instability of certain stringtheory inspired geometries [94] and Hawking radiation were recently established by Mathur and co-workers [95,96].…”

Section: Ergoregion Instabilitymentioning

confidence: 99%

“…The connections between the ergo-region instability of certain stringtheory inspired geometries [94] and Hawking radiation were recently established by Mathur and co-workers [95,96]. Black hole collisions were traditionally studied with the aim of understanding gravitational-wave emission from astrophysical sources and their subsequent detection in Earth-based detectors.…”

Section: Ergoregion Instabilitymentioning

confidence: 99%

“…For those who are skeptical of the existence of black holes, mimickers are an interesting alternative. Well, the ergo-region instability effectively rules out most of these alternatives as soon as they spin -and most compact massive objects out there are spinning fast [91,92,93]The connections between the ergo-region instability of certain stringtheory inspired geometries [94] and Hawking radiation were recently established by Mathur and co-workers [95,96].Black hole bombs and explosions 13 3 Black hole collisions Fig. 6 Black hole production from high energy collisions and the hoop conjecture.…”

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Black hole bombs and explosions: from astrophysics to particle physics

Cardoso

2013

Gen Relativ Gravit

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Black holes are the elementary particles of gravity, the final state of sufficiently massive stars and of energetic collisions. With a forty-year long history, black hole physics is a fully-blossomed field which promises to embrace several branches of theoretical physics. Here I review the main developments in highly dynamical black holes with an emphasis on high energy black hole collisions and probes of particle physics via superradiance. This write-up, rather than being a collection of well known results, is intended to highlight open issues and the most intriguing results.Keywords Black holes · Superradiance · Cosmic Censorship · Transplanckian collisions IntroductionThe Kerr-Newman family of black holes in stationary four-dimensional, asymptotically flat spacetimes exhausts all possible electro-vacuum solutions in General Relativity. Theoretical aspects of black hole physics were fully developed decades ago, when the Kerr-Newman family was discovered and characterized. Most of the tools to understand black hole physics have been in place since that period and most processes involving black holes were controlled at the order-of-magnitude level for at least two decades. Perhaps due to these reasons, "black hole physics" conjures up images of horizons and time-warps and old-fashioned, frozen-in-time topics to lay audiences. However, in the last years the activity in the field is bubbling up Vitor Cardoso CENTRA, Departamento de Física, Instituto Superior Técnico, Universidade Técnica de Lisboa -UTL, Av. Rovisco Pais 1, 1049 Lisboa, Portugal E-mail: vitor.cardoso@ist.utl.pt Present address: Perimeter Institute for Theoretical Physics, Waterloo, Ontario N2J 2W9, Canada 2 Vitor Cardoso and the interest in these issues has widened, driven by several unrelated events at the observational/instrumental, technical and conceptual levels such as (i) our capacity to observationally scrutinize the region close to the horizon within a few Schwarzschild radii, with radio and deep infrared interferometry, of which we have seen but the first steps [1,2,3,4];(ii) the ability to measure black hole spins more accurately than ever before using X-ray spectroscopy [5,6] or "continuum-fitting" methods [7]. Measurement of black hole mass and spin is one necessary step in testing General Relativity [8]; (iii) huge technological progress in gravitational-wave observatories, some of which had been gathering data at design sensitivities for several years and are now being upgraded to sensitivities one order of magnitude higher (black hole binaries are thought to be among the first objects to ever be detected in the gravitational-wave spectrum);(iv) our ability to numerically evolve black hole binaries at the full nonlinear level [9,10,11] and its immediate importance for gravitational-wave searches and high-energy physics [12]; (v) improvement of perturbative schemes, either by an understanding of regularization schemes to handle the self-force [13,14], or by faster and more powerful methods to deal with the full ladder of pe...

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Black holes and beyond

Cited by 61 publications

References 87 publications

Gauge-Gravity Duality and the Black Hole Interior

Gauge-Gravity Duality and the Black Hole Interior

Non-BPS multi-bubble microstate geometries

Black hole bombs and explosions: from astrophysics to particle physics

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