Metastable gravitons and infinite volume extra dimensions

By G. Dvali, G. Gabadadze, M. Porrati. 2000

339 citations recorded by the source corpus.

Abstract We address the issue of whether extra dimensions could have an infinite volume and yet reproduce the effects of observable four-dimensional gravity on a brane. There is no normalizable zero-mode graviton in this case, nevertheless correct Newton's law can be obtained by exchanging bulk gravitons. This can be interpreted as an exchange of a single metastable 4D graviton. Such theories have remarkable phenomenological signatures since the evolution of the Universe becomes high-dimensional at very large scales. Furthermore, the bulk supersymmetry in the infinite volume limit might be preserved while being completely broken on a brane. This gives rise to a possibility of controlling the value of the bulk cosmological constant. Unfortunately, these theories have difficulties in reproducing certain predictions of Einstein's theory related to relativistic sources. This is due to the van Dam–Veltman–Zakharov discontinuity in the propagator of a massive graviton. This suggests that all theories in which contributions to effective 4D gravity come predominantly from the bulk graviton exchange should encounter serious phenomenological difficulties.

Subfields: Astronomy and Astrophysics, Nuclear and High Energy Physics, Statistical and Nonlinear Physics

View Paper: https://www.semanticscholar.org/paper/9d7af83cb7c6f368c61e7a1d43fd90547aaeb4db

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Citations in the corpus

Brane world: Disappearing massive matter (2000, neutral): “ar X iv :h ep -t h/ 00 06 04 6v 1 6 J”
Massive Gravity (2014, methodology): “Furthermore, in the simplest models, as soon as the first massive mode is relevant so is an infinite tower of massive (Kaluza–Klein) modes and one is never in a regime where a single massive graviton dominates, or at least this was the situation until the Dvali–Gabadadze–Porrati model (DGP) [208, 20”
Locally localized gravity (2000, methodology): “In this respect our setup differs crucially from the quasilocalized gravity model of [21] that was analyzed in a very similar fashion in [22, 23, 24, 25, 26].”
The Cosmological Constant from the Viewpoint of String Theory (2000, background): “) One apparent problem with this scenario (apart from possible issues raised in [12]) is that it cannot be realized with matter fields that obey even the weakest form of a positive energy condition that is usually considered physically acceptable, which is that the stress tensor Tij obeys n nTij ≥ 0”
D‐branes in Standard Model building, gravity and cosmology (2003, background): “Similar behavior was also observed in [51]-[55],[208].”
Scrutinizing Exotic Cosmological Models Using ESSENCE Supernova Data Combined with Other Cosmological Probes (2007, background): “Some of these suggestions take the form of variations of the equations of general relativity (e.g., the Dvali-GabadadzePorrati model, Dvali et al. 2000), others invoke more complex and evolving forms of dark energy (e.g., quintessence, Caldwell et al. 1998).”
Categorizing Different Approaches to the Cosmological Constant Problem (2004, background): “Two further ideas in this direction, one in D < 4 and one in D > 4 are [20, 21], however the latter later turned out to be internally inconsistent [22].”