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Brane inflation in background supergravity

By Sayantan Choudhury and Supratik Pal

Abstract

We propose a model of inflation in the framework of brane cosmology driven by background supergravity. Starting from bulk supergravity we construct the inflaton potential on the brane and employ it to investigate for the consequences to inflationary paradigm. To this end, we derive the expressions for the important parameters in brane inflation, which are somewhat different from their counterparts in standard cosmology, using the one loop radiative corrected potential. We further estimate the observable parameters and find them to fit well with recent observational data by confronting with WMAP7 using CAMB. We also analyze the typical energy scale of brane inflation with our model, which resonates well with present estimates from cosmology and standard model of particle physics.Comment: 14 pages, 7 figures, 1 table, some minor corrections in the text, Abstract slightly modified, Accepted for publication in Physical Review

Topics: High Energy Physics - Theory, Astrophysics - Cosmology and Nongalactic Astrophysics, General Relativity and Quantum Cosmology, High Energy Physics - Phenomenology
Year: 2012
DOI identifier: 10.1103/PhysRevD.85.043529
OAI identifier: oai:arXiv.org:1102.4206
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