Solar system tests of brane world models

Böhmer, Christian G.; Harkó, Tiberiu; Lobo, Francisco S. N.

doi:10.1088/0264-9381/25/4/045015

Cited by 68 publications

(92 citation statements)

References 89 publications

(64 reference statements)

Supporting

Mentioning

Contrasting

Unclassified

Order By: Relevance

“…Obtained results can be further used in experiments to detect the interference effects related to the phenomena of braneworld. Recently authors of the paper [25] got estimation upper limit for brane parameter as Q * ≤ 10 8 cm 2 from classical Solar system tests. In the paper [26] also made some good estimations for brane parameter from effects around planets in Solar system.…”

Section: Resultsmentioning

confidence: 99%

Quantum Interference Effects in Spacetime of Slowly Rotating Compact Objects in Braneworld

2010

View full text Add to dashboard Cite

The phase shift a neutron interferometer caused by the gravitational field and the rotation of the earth is derived in a unified way from the standpoint of general relativity. General relativistic quantum interference effects in the slowly rotating braneworld as the Sagnac effect and phase shift effect of interfering particle in neutron interferometer are considered. It was found that in the case of the Sagnac effect the influence of brane parameter is becoming important due to the fact that the angular velocity of the locally non rotating observer must be larger than one in the Kerr space-time. In the case of neutron interferometry it is found that due to the presence of the parameter Q * an additional term in the phase shift of interfering particle emerges from the results of the recent experiments we have obtained upper limit for the tidal charge as Q * 10 7 cm 2 . Finally, as an example, we apply the obtained results to the calculation of the (ultra-cold neutrons) energy level modification in the braneworld.

show abstract

Section: Resultsmentioning

confidence: 99%

Quantum Interference Effects in Spacetime of Slowly Rotating Compact Objects in Braneworld

2010

View full text Add to dashboard Cite

show abstract

“…However, it is obvious that ∂ r V eff = 0 on any-fold degenerate horizons, since it is at least the second order function of r − r H as just being seen in Eqs. (15) and (18). This indicates that r H is just the innermost circular orbit of the particle with L c for any-fold degenerate horizons.…”

Section: B Effective Potentialmentioning

confidence: 85%

“…Under the limit of the solar system on the tidal charge Q ≤ 8 × 10 4 m 2 = 0.037 for a BH with one sun mass [18], the horizon can be degenerated if a 0.981. From the discussion about two-fold degenerated horizons in the preceding section, we know that, for the extreme RS tidal charge BH with a = √ 1 − Q, the CM energy of two particles will be divergent, provided that one particle's angular momentum equates to the critical value (11)…”

Section: B Rs Tidal Charge Bhsmentioning

confidence: 99%

“…We will show that there is no degenerate horizon, but the ultra-energetic collisions can be produced by considering multiple scattering. To be complementary, we will discuss the BSW process near the degenerate horizon of the tidal charged BH based on Randall-Sundrum (RS) braneworld scenarios, which is similar to the 4-dimensional KNM BH, but the tidal charge could be large (< 10 4 m 2 in solar system tests) [18].…”

Section: Introductionmentioning

confidence: 99%

See 1 more Smart Citation

General stationary charged black holes as charged particle accelerators

Zhu¹,

Wu²,

Liu³

et al. 2011

Phys. Rev. D

View full text Add to dashboard Cite

We study the possibility of getting infinite energy in the center of mass frame of colliding charged particles in a general stationary charged black hole. For black holes with two-fold degenerate horizon, it is found that arbitrary high center-of-mass energy can be attained, provided that one of the particle has critical angular momentum or critical charge, and the remained parameters of particles and black holes satisfy certain restriction. For black holes with multiple-fold degenerate event horizons, the restriction is released. For non-degenerate black holes, the ultra-high centerof-mass is possible to be reached by invoking the multiple scattering mechanism. We obtain a condition for the existence of innermost stable circular orbit with critical angular momentum or charge on any-fold degenerate horizons, which is essential to get ultra-high center-of-mass energy without fine-tuning problem. We also discuss the proper time spending by the particle to reach the horizon and the duality between frame dragging effect and electromagnetic interaction. Some of these general results are applied to braneworld small black holes.

show abstract

“…For a review of the black hole properties and of lensing effects in brane world models see [91]. Further work on lensing in brane worlds is presented in [121][122][123][124][125] and current observational constraints on the model parameters from classical, solar-system, tests are contained in [126,127].…”

Section: Introductionmentioning

confidence: 99%

Null fluid collapse in brane world models

Harkó

Lake

2014

Phys. Rev. D

Self Cite

View full text Add to dashboard Cite

The brane world description of our universe entails a large extra dimension and a fundamental scale of gravity that may be lower than the Planck scale by several orders of magnitude. An interesting consequence of this scenario occurs in the nature of spherically-symmetric vacuum solutions to the brane gravitational field equations, which often have properties quite distinct from the standard black hole solutions of general relativity. In this paper, the spherically-symmetric collapse on the brane world of four types of null fluid, governed by the barotropic, polytropic, strange quark "bag" model and Hagedorn equations of state, is investigated. In each case, we solve the approximate gravitational field equations, obtained in the high density limit, determine the equation which governs the formation of apparent horizons and investigate the conditions for the formation of naked singularities. Though, naively, one would expect the increased effective energy density on the brane to favor the formation of black holes over naked singularities, we find that, for the types of fluid considered, this is not the case. However, the black hole solutions differ substantially from their general-relativistic counterparts and brane world corrections often play a role analogous to charge in general relativity. As an astrophysical application of this work, the possibility that energy emission from a Hagedorn fluid collapsing to form a naked singularity may be a source of GRBs in the brane world is also considered.

show abstract

Solar system tests of brane world models

Cited by 68 publications

References 89 publications

Quantum Interference Effects in Spacetime of Slowly Rotating Compact Objects in Braneworld

Quantum Interference Effects in Spacetime of Slowly Rotating Compact Objects in Braneworld

General stationary charged black holes as charged particle accelerators

Null fluid collapse in brane world models

Contact Info

Product

Resources

About