Black holes escaping from domain walls

Flachi, Antonino; Pujolàs, Oriol; Sasaki, Misao; Tanaka, Takahiro

doi:10.1103/physrevd.73.125017

Cited by 27 publications

(59 citation statements)

References 18 publications

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“…Other aspects of such transitions in the composite braneblack hole systems were studied in [19,[23][24][25][26][27]. In the context of the braneworld models, the interaction of black holes with DWs attracted much attention in connection with the conjectured creation of black holes in particle collisions on the brane and their possible escape into the bulk [28][29][30]. (In this framework we prefer to use the term "brane", though we always deal with branes of co-dimension one, that is with DWs.…”

Section: Jhep01(2018)120mentioning

confidence: 99%

Piercing of domain walls: new mechanism of gravitational radiation

Gal’tsov

Melkumova

Spirin

2018

J. High Energ. Phys.

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Domain wall (DW) moving in media undergoes the friction force due to particle scattering. However certain particles are not scattered, but perforate the wall. As a result, the wall gets excited in the form of the branon wave, while the particle experiences an acceleration jump. This gives rise to generation of gravitational waves which we call "piercing gravitational radiation" (PGR). Though this effect is of higher order in the gravitational constant than the quadrupole radiation from the collapsing DWs, its amplitude is enhanced in the case of relativistic particles or photons because of absence of the velocity factor which is present in the quadrupole formula. We derive the spectral-angular distribution of PGR within the simplified model of the weakly gravitating particle-wall system in Minkowski space-time of arbitrary dimensions. Within this model the radiation amplitude is obtained analytically. The spectral-angular distribution of PGR in such an approach suffers from infrared and ultraviolet divergences as well as from collinear divergence in the case of a massless perforating particle. Different cut-off schemes appropriate in various dimensions are discussed. Our results are applicable both to cosmological DWs and to the braneworld models. PGR can be relevant in the infrared part of the spectrum of the relic gravitons where radiation from the collapsed DWs is damped.

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Section: Jhep01(2018)120mentioning

confidence: 99%

Piercing of domain walls: new mechanism of gravitational radiation

Gal’tsov

Melkumova

Spirin

2018

J. High Energ. Phys.

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“…However, it is clear that the emission of single-helicity modes is not going to have the same property, and it is this additional variation in the angular distribution that we investigate here. With a similar motivation, certain aspects of the angular distribution of the emission spectra of spin-1/2 particles were studied also in [15].…”

Section: The Angular Profilementioning

confidence: 99%

“…The 'spin-down' phase of the evolution has received considerable attention recently [10,11,12,13,14,15]. A complete analysis of the 'spin-down' phase is lacking because the graviton emission has yet to be fully modelled (see [16] for work in this direction), leaving open the question of whether the idea that "black holes radiate mainly on the brane" [17] is valid for this phase of the evolution (see [8,12,18] for some papers discussing this issue).…”

Section: Introductionmentioning

confidence: 99%

Angular profile of emission of non-zero spin fields from a higher-dimensional black hole

Casals¹,

Dolan²,

Kanti³

et al. 2009

Physics Letters B

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“…Especially interesting is the process of perforation, which was suggested as a new mechanism of domain-wall destruction in the early Universe [4,7,8]. Other applications refer to the braneworld models of the Randall-Sundrum type [9][10][11][12], in particular, the problem of escape of black holes from branes [13][14][15].…”

Section: Introductionmentioning

confidence: 99%

Branestrahlung: Radiation in the particle-brane collision

2016

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We calculate the radiation accompanying the gravitational collision of a domain wall a the point particle in five-dimensional spacetime. This process -which can be regarded as brane-particle bremsstrahlung, here called branestrahlung -has unusual features. Since the brane has intrinsic dynamics, it gets excited in the course of collision, and, in particular, at the moment of perforation the shock branon wave is generated, which then expands with the velocity of light. Therefore, apart from the time-like source whose radiation can be computed in a standard way, the total radiation source contains a light-like part whose retarded field is quite nontrivial, exhibiting interesting retardation and memory effects. We analyze this field in detail, showing that -contrary to the claims that the light-like sources should not radiate at all -the radiation is nonzero and has classically divergent spectrum. We estimate the total radiation power introducing appropriate cutoffs. In passing, we explain how the sum of the nonlocal (with the support inside the light cone) and the local (supported on the cone) singular parts of the Green's function of the five-dimensional d'Alembert equation together defines a regular functional.

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Black holes escaping from domain walls

Cited by 27 publications

References 18 publications

Piercing of domain walls: new mechanism of gravitational radiation

Piercing of domain walls: new mechanism of gravitational radiation

Angular profile of emission of non-zero spin fields from a higher-dimensional black hole

Branestrahlung: Radiation in the particle-brane collision

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