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Title: Big-bang nucleosynthesis with an evolving radion in the brane world scenario

Abstract

We consider the big-bang nucleosynthesis (BBN) in the brane world scenario, where all matter fields are confined on our 3-brane and the radion of the Brane evolves cosmologically. In the Einstein frame fundamental fermion masses vary and the results of standard BBN (SBBN) are modified. We can thus use the observational primordial element abundances to impose constraints on the possible variations of the radion. The possibility of using the evolving radion to resolve the discrepancies between the Wilkinson Microwave Anisotropy Probe and SBBN values of the baryon-to-photon ratio ({eta}) is also discussed. The results and constraints presented here are applicable to other models in which fundamental fermion masses vary.

Authors:
;  [1]
  1. Department of Physics, Chinese University of Hong Kong, Hong Kong (China)
Publication Date:
OSTI Identifier:
20795701
Resource Type:
Journal Article
Resource Relation:
Journal Name: Physical Review. D, Particles Fields; Journal Volume: 73; Journal Issue: 2; Other Information: DOI: 10.1103/PhysRevD.73.023509; (c) 2006 The American Physical Society; Country of input: International Atomic Energy Agency (IAEA)
Country of Publication:
United States
Language:
English
Subject:
72 PHYSICS OF ELEMENTARY PARTICLES AND FIELDS; 71 CLASSICAL AND QUANTUM MECHANICS, GENERAL PHYSICS; ANISOTROPY; BARYONS; COSMOLOGY; ELEMENT ABUNDANCE; MASS; MEMBRANES; NUCLEOSYNTHESIS; PHOTONS; PROBES; RELICT RADIATION; VARIATIONS

Citation Formats

Li, B., and Chu, M.-C.. Big-bang nucleosynthesis with an evolving radion in the brane world scenario. United States: N. p., 2006. Web. doi:10.1103/PHYSREVD.73.0.
Li, B., & Chu, M.-C.. Big-bang nucleosynthesis with an evolving radion in the brane world scenario. United States. doi:10.1103/PHYSREVD.73.0.
Li, B., and Chu, M.-C.. Sun . "Big-bang nucleosynthesis with an evolving radion in the brane world scenario". United States. doi:10.1103/PHYSREVD.73.0.
@article{osti_20795701,
title = {Big-bang nucleosynthesis with an evolving radion in the brane world scenario},
author = {Li, B. and Chu, M.-C.},
abstractNote = {We consider the big-bang nucleosynthesis (BBN) in the brane world scenario, where all matter fields are confined on our 3-brane and the radion of the Brane evolves cosmologically. In the Einstein frame fundamental fermion masses vary and the results of standard BBN (SBBN) are modified. We can thus use the observational primordial element abundances to impose constraints on the possible variations of the radion. The possibility of using the evolving radion to resolve the discrepancies between the Wilkinson Microwave Anisotropy Probe and SBBN values of the baryon-to-photon ratio ({eta}) is also discussed. The results and constraints presented here are applicable to other models in which fundamental fermion masses vary.},
doi = {10.1103/PHYSREVD.73.0},
journal = {Physical Review. D, Particles Fields},
number = 2,
volume = 73,
place = {United States},
year = {Sun Jan 15 00:00:00 EST 2006},
month = {Sun Jan 15 00:00:00 EST 2006}
}