Instability of nonsupersymmetric smooth geometries

Cardoso, Vítor; Dias, Óscar J. C.; Hovdebo, Jordan L.; Myers, Robert C.

doi:10.1103/physrevd.73.064031

Cited by 110 publications

(229 citation statements)

References 81 publications

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“…However, on general D1-D5 CFT grounds we expect these microstate solutions to be unstable, and this instability gives the Hawking radiation rate of the dual CFT microstate [56]. In the well-known JMaRT solution [57] this instability is visible from supergravity because the solutions have an ergo-sphere but no horizon [58] and the time scale of the instability is matched perfectly by the emission time from the dual field theory microstate [59,60]. Hence, if the instabilities of anti-branes were universal and the nearextremal microstate solutions constructed by placing negatively-charged supertubes inside BPS microstates were unstable, this would fit perfectly with what one expects from the dual D1-D5 CFT and from the general properties of non-extremal black hole microstates.…”

Section: Jhep02(2015)146mentioning

confidence: 99%

Giant tachyons in the landscape

Bena

Graña

Kuperstein

et al. 2015

J. High Energ. Phys.

124

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Abstract:We study the dynamics of localized and fully backreacting anti-D3 branes at the tip of the Klebanov-Strassler geometry. We use a non-supersymmetric version of the Polchinski-Strassler analysis to compute the potential for anti-D3 branes to polarize into all kinds of five-brane shells in all possible directions. We find that generically there is a direction along which the brane-brane interaction is repulsive, which implies that anti-D3 branes are tachyonic. Hence, even though anti-D3 branes can polarize into five-branes, the solution will most likely be unstable. This indicates that anti-D3 brane uplift may not result in stable de Sitter vacua.

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Section: Jhep02(2015)146mentioning

confidence: 99%

Giant tachyons in the landscape

Bena

Graña

Kuperstein

et al. 2015

J. High Energ. Phys.

124

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“…It is well-known that the JMaRT solutions are unstable to decay via ergoregion emission [65]. In the decoupling limit, the solutions are near-BPS and have large AdS 3 × S 3 regions, so the instability can then be studied holographically.…”

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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confidence: 99%

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Black hole bombs and explosions: from astrophysics to particle physics

Cardoso

2013

Gen Relativ Gravit

Self Cite

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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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Instability of nonsupersymmetric smooth geometries

Cited by 110 publications

References 81 publications

Giant tachyons in the landscape

Giant tachyons in the landscape

Non-BPS multi-bubble microstate geometries

Black hole bombs and explosions: from astrophysics to particle physics

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