The classical tests in Kaluza-Klein gravity

Kalligas, D.; Wesson, Paul S.; Everitt, C. W. F.

doi:10.1086/175195

Cited by 84 publications

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“…It extends general relativity in a way that adds new algebraic possibilities, while being simple enough to lead to new physical effects that can be concretely formulated. For this reason, it has been extensively studied, notably in regard to the solar system and cosmology, where it is known to be in agreement with observations (Kalligas, Wesson, & Everitt 1995;Wesson 1992;Coley 1994). In cosmology, the standard class of fivedimensional models is due to Ponce de Leon (1988).…”

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confidence: 80%

Images of the Big Bang

Wesson

Seahra

2001

The Astrophysical Journal

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Using a combination of algebraic and computer work, we embed the standard spatially flat four-dimensional cosmological models and inflationary models in a flat five-dimensional space and thereby obtain pictures of the big bang. Such embeddings have important implications for astrophysics, notably in regard to particle masses and background radiation. This approach can be extended to superstrings, supergravity, and membrane theory.

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confidence: 80%

Images of the Big Bang

Wesson

Seahra

2001

The Astrophysical Journal

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“…The latter theories, however, have yet to be developed to the stage at which they can be meaningfully tested. By comparison, the Ðve-dimensional theory is a modest extension of four-dimensional general relativity and is known to be in agreement with the classical tests in the solar system (Kalligas, Wesson, & Everitt 1995 ;Liu & Overduin 2000), as well as the less exact data from cosmology (Wesson 1992). In the following, we therefore go with the minimal extension of general relativity, using previous work on Ðve-dimensional manifolds (Liu & Mashhoon 1995 to see what e †ects an extra dimension has on " and the big bang.…”

Section: Introductionmentioning

confidence: 88%

Untitled

2001

ApJ

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We present a rich class of exact solutions that contains radiation-dominated and matter-dominated models for the early and late universe. They include a variable cosmological "" constant ÏÏ that is derived from a higher dimension and manifests itself in spacetime as an energy density for the vacuum. This is in agreement with observational data and is compatible with extensions of general relativity to string and membrane theory. Our solutions are also typiÐed by a nonsingular "" big bounce ÏÏ (as opposed to a singular big bang), where matter is created as in inÑationary cosmology.

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“…Our model will concentrate on dynamical effects, which are most important in the early universe, for galaxies, and leave the late universe to be described by standard solutions. However, we will also briefly consider the solar system, since while 5D gravity is in agreement with the classical tests of relativity (Kalligas et al 1995), we see the opportunity for a new experiment involving a high-velocity, radially-moving spacecraft. Our aim is to bring higher-dimensional cosmology into the range of meaningful test.…”

Section: Introductionmentioning

confidence: 93%

Astrophysical consequences of extended cosmology

Wesson

2005

A&A

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Abstract. We outline astrophysical implications of a cosmological model based on the popular view that gravity should be extended from four to more dimensions to unify the forces of physics. At early times the model is inflationary, galaxies form easier, and their peculiar velocities are damped to produce a universal energy field. At late times the model is close to standard, but the dynamics of field galaxies and those in clusters are modified. It is possible to further test the model using a high-velocity radially-moving spacecraft in the solar system. These consequences provide a good way to look for extra dimensions.

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The classical tests in Kaluza-Klein gravity

Cited by 84 publications

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Images of the Big Bang

Images of the Big Bang

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Astrophysical consequences of extended cosmology

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