On graviton production in braneworld cosmology

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

DOI:https://doi.org/10.1103/PhysRevD.72.104018· OSTI ID:20711571

Cartier, Cyril; Durrer, Ruth; Ruser, Marcus ^[1]

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1. Departement de Physique Theorique, Universite de Geneve, 24 quai Ernest Ansermet, 1211 Geneva 4 (Switzerland)

We study braneworlds in a five-dimensional bulk, where cosmological expansion is mimicked by motion through AdS{sub 5}. We show that the five-dimensional graviton reduces to the four-dimensional one in the late time approximation of such braneworlds. Inserting a fixed regulator brane far from the physical brane, we investigate quantum graviton production due to the motion of the brane. We show that the massive Kaluza-Klein modes decouple completely from the massless mode and they are not generated at all in the limit where the regulator brane position goes to infinity. In the low energy limit, the massless four-dimensional graviton obeys the usual 4D equation and is therefore also not generated in a radiation-dominated universe.

• OSTI ID: 20711571
• Journal Information: Physical Review. D, Particles Fields, Journal Name: Physical Review. D, Particles Fields Journal Issue: 10 Vol. 72; ISSN PRVDAQ; ISSN 0556-2821
• Country of Publication: United States
• Language: English

Related Subjects

72 PHYSICS OF ELEMENTARY PARTICLES AND FIELDS
COSMOLOGY
EXPANSION
FIELD EQUATIONS
GRAVITONS
KALUZA-KLEIN THEORY
MEMBRANES
QUANTUM GRAVITY
UNIVERSE