Asymmetric brane-worlds with induced gravity

Journal Article · Sat Jan 15 04:00:00 EST 2005 · Physical Review. D, Particles Fields

DOI:https://doi.org/10.1103/PhysRevD.71.024032· OSTI ID:20705850

Gergely, Laszlo A ^[1]; Maartens, Roy ^[1]

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1. Institute of Cosmology and Gravitation, University of Portsmouth, Portsmouth PO1 2EG (United Kingdom)

The Randall-Sundrum scenario, with a 1+3-dimensional brane in a five-dimensional bulk spacetime, can be generalized in various ways. We consider the case where the Z{sub 2} symmetry at the brane is relaxed, and in addition the gravitational action is generalized to include an induced gravity term on the brane. We derive the complete set of equations governing the gravitational dynamics for a general brane and bulk, and identify how the asymmetry and the induced gravity act as effective source terms in the projected field equations on the brane. For a Friedmann brane in an anti-de Sitter bulk, the solution of the Friedmann equation is given by the solution of a quartic equation. We find the perturbative solutions for small asymmetry, which has an effect at late times.

• OSTI ID: 20705850
• Journal Information: Physical Review. D, Particles Fields, Journal Name: Physical Review. D, Particles Fields Journal Issue: 2 Vol. 71; ISSN PRVDAQ; ISSN 0556-2821
• Country of Publication: United States
• Language: English

Related Subjects

72 PHYSICS OF ELEMENTARY PARTICLES AND FIELDS
ASYMMETRY
COSMOLOGY
DE SITTER GROUP
FIELD EQUATIONS
GRAVITATION
MATHEMATICAL SOLUTIONS
SOURCE TERMS
SPACE-TIME
SYMMETRY
THREE-DIMENSIONAL CALCULATIONS