Hawking emission of gravitons in higher dimensions: non-rotating black holes

Cardoso, Vítor; Cavaglià, M.; Gualtieri, Leonardo

doi:10.1088/1126-6708/2006/02/021

Cited by 130 publications

(140 citation statements)

References 71 publications

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“…Regarding the latter, we have already discussed the rapid proliferation, with n, of the gravitons in the bulk, however, the large number of Standard Model degrees of freedom living on the brane must also be taken into account. When all the above are implemented in the analysis, it is found [138,139] that the brane channel is the most dominant during the sphericallysymmetric phase of the black hole, a result that agrees with an early analytical argument [141].…”

Section: Energy Balance Between the Brane And The Bulksupporting

confidence: 76%

“…An interesting twist is that the tensor graviton modes, the most negligible degrees of freedom at the low-energy regime [114], proliferate as n increases. Overall, it is found [138,139] that, as n reaches the value 7, a sphericallysymmetric black hole emits 35 times more energy in the bulk in the form of gravitons than in any other particle on the brane.…”

Section: Emission Of Massless Fields In the Bulkmentioning

confidence: 99%

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Hawking Radiation from Higher-Dimensional Black Holes

Kanti

Winstanley

2014

Fundamental Theories of Physics

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Summary. We review the quantum field theory description of Hawking radiation from evaporating black holes and summarize what is known about Hawking radiation from black holes in more than four space-time dimensions. In the context of the Large Extra Dimensions scenario, we present the theoretical formalism for all types of emitted fields and a selection of results on the radiation spectra. A detailed analysis of the Hawking fluxes in this case is essential for modelling the evaporation of higher-dimensional black holes at the LHC, whose creation is predicted by lowenergy models of quantum gravity. We discuss the status of the quest for black-hole solutions in the context of the Randall-Sundrum brane-world model and, in the absence of an exact metric, we review what is known about Hawking radiation from such black holes.

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Section: Energy Balance Between the Brane And The Bulksupporting

confidence: 76%

Section: Emission Of Massless Fields In the Bulkmentioning

confidence: 99%

Hawking Radiation from Higher-Dimensional Black Holes

Kanti

Winstanley

2014

Fundamental Theories of Physics

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“…All types of SM particles are emitted, although the graviton emission spectra have been calculated only for the non-rotating case [13,14]. The emission energy spectrum is characterised by the Hawking temperature, which depends on n, and is larger for lower mass and for more rapidly rotating black holes.…”

Section: Jhep08(2014)103mentioning

confidence: 99%

Search for microscopic black holes and string balls in final states with leptons and jets with the ATLAS detector at s $$ \sqrt{s} $$ = 8 TeV

Aad¹,

Abbott²,

Abdallah³

et al. 2014

J. High Energ. Phys.

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A search for an excess of events with multiple high transverse momentum objects including charged leptons and jets is presented, using 20.3 fb −1 of proton-proton collision data recorded by the ATLAS detector at the Large Hadron Collider in 2012 at a centre-of-mass energy of √ s = 8 TeV. No excess of events beyond Standard Model expectations is observed. Using extra-dimensional models for black hole and string ball production and decay, exclusion contours are determined as a function of the mass threshold for production and the fundamental gravity scale for two, four and six extra dimensions. For six extra dimensions, mass thresholds of 4.8-6.2 TeV are excluded at 95% confidence level, depending on the fundamental gravity scale and model assumptions. Upper limits on the fiducial cross-sections for non-Standard Model production of these final states are set. 6 Event selection 8 7 Background estimation 9 7.1 Prompt background estimation from control regions 9 7.2 Backgrounds from misidentified objects and non-prompt leptons 13 7.3 Background smoothing with fits 148 Systematic uncertainties 159 Results and interpretation 17 Summary 25The ATLAS collaboration 32 IntroductionA long-standing problem in particle physics is the very large difference between two apparently fundamental energy scales: the electroweak scale at O(0.1 TeV) and the gravitational (Planck) scale M Pl = O(10 16 TeV). Models postulating extra spatial dimensions into which the gravitational field propagates attempt to address this hierarchy problem [1][2][3][4]. In most of these models, the Standard Model (SM) fields are constrained to the one time and three spatial dimensions of our universe, whilst the gravitons also propagate into the n "bulk" extra dimensions. In these models, the fundamental gravitational scale in the full (n + 4) space-time dimensions, M D , is dramatically lower than M Pl , and represents an effective scale appropriate for probes of the gravitational interactions at low energies. A value of M D in the TeV range would allow for the production of strong gravitational states such as microscopic black holes at energies accessible at the Large Hadron Collider (LHC) [5][6][7]. Two well-motivated extra-dimensional models are those with large flat extra dimensions -1 - JHEP08(2014)103(ADD models [2,3]) and those with small, usually warped, extra dimensions (RS models [4]). This analysis considers ADD models, for which the n = 1 case is ruled out and the n = 2 case is disfavoured by current astrophysical and tabletop experiments [8]. Thus, benchmark models with two, four and six additional spatial dimensions are considered.Estimates of the black hole production cross-sections invoke semiclassical approximations, the validity of which require the production centre-of-mass energy to be significantly above M D . This motivates the introduction of a production mass threshold M th , well above M D . In the black hole formation stage, some energy is expected to be lost to gravitational or SM radiation. This has recently been calcu...

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“…If extra dimensions have some impact on the theory, certainly it is not as extra matter, but it appears at least as the term (1/2) , in (29). In matter models applicable to a galactic context pressure arises from the velocity dispersion in the motion of particles or from exchange of momentum among particles through collisions, ionized interstellar baryonic gases.…”

Section: Extra Dimensions and The Interpretation Of Dark Mattermentioning

confidence: 99%

Gravity with Extra Dimensions and Dark Matter Interpretation: A Straightforward Approach

Araújo

Rocha

2013

ISRN High Energy Physics

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Any connection between dark matter and extra dimensions can be cognizably evinced from the associated effective energymomentum tensor. In order to investigate and test such relationship, a higher dimensional spacetime endowed with a factorizable general metric is regarded to derive a general expression for the stress tensor-from the Einstein-Hilbert action-and to elicit the effective gravitational potential. A particular construction for the case of six dimensions is provided, and it is forthwith revealed that the missing mass phenomenon may be explained, irrespective of the dark matter existence. Moreover, the existence of extra dimensions in the universe accrues the possibility of a straightforward mechanism for such explanation. A configuration whose density profile coincides with the Newtonian potential for spiral galaxies is constructed, from a 4-dimensional isotropic metric plus extradimensional components. A Miyamoto-Nagai ansatz is used to solve Einstein equations. The stable rotation curves associated with such system are computed, in full compliance with the observational data, without fitting techniques. The density profiles are reconstructed and compared to the ones obtained from the Newtonian potential.

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Hawking emission of gravitons in higher dimensions: non-rotating black holes

Cited by 130 publications

References 71 publications

Hawking Radiation from Higher-Dimensional Black Holes

Hawking Radiation from Higher-Dimensional Black Holes

Search for microscopic black holes and string balls in final states with leptons and jets with the ATLAS detector at s $$ \sqrt{s} $$ = 8 TeV

Gravity with Extra Dimensions and Dark Matter Interpretation: A Straightforward Approach

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