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{
"abstracts": [
{
"content": "We study the averaged action of the Randall-Sundrum model with a time\ndependent metric ansatz. It can be reformulated in terms of a Brans-Dicke\naction with time dependent Newton's constant. We show that the physics of early\nuniverse, particularly inflation, is governed by the Brans-Dicke theory. The\nBrans-Dicke scalar, however, quickly settles to its equilibrium value and\ndecouples from the post-inflationary cosmology. The deceleration parameter is\nnegative to start with but changes sign before the Brans-Dicke scalar settles\nto its equilibrium value. Consequently, the brane metric smoothly exits\ninflation. We have also studied the slow-roll inflation in our model and\ninvestigated the spectra of the density perturbation generated by the radion\nfield and find them consistent with the current observations.",
"lang": "en",
"mimetype": "text/plain",
"sha1": "0e6dbe8423cb4402dece4bc7f99ef48f8a27fad7"
}
],
"contribs": [
{
"index": 0,
"raw_name": "Somdatta Bhattacharya",
"role": "author"
},
{
"index": 1,
"raw_name": "Debajyoti Choudhury",
"role": "author"
},
{
"index": 2,
"raw_name": "Dileep P. Jatkar",
"role": "author"
},
{
"index": 3,
"raw_name": "Anjan\n Ananda Sen",
"role": "author"
}
],
"ext_ids": {
"arxiv": "hep-th/0103248v4"
},
"extra": {
"arxiv": {
"base_id": "hep-th/0103248",
"categories": [
"hep-th",
"gr-qc",
"hep-ph"
],
"comments": "Revised version, Accepted in Class. Quant. Gravity",
"journal_ref": "Class.Quant.Grav. 19 (2002) 5025-5038"
}
},
"ident": "ydx2wolhvffxnb6as6gekmocx4",
"language": "en",
"refs": [],
"release_date": "2002-09-11",
"release_stage": "accepted",
"release_type": "article",
"release_year": 2002,
"revision": "c9c05398-024f-4022-8913-9157f03424d4",
"state": "active",
"title": "Brane Dynamics in the Randall-Sundrum model, Inflation and Graceful Exit",
"version": "v4",
"work_id": "b7lr2ma3hjgcba4kqb3vng2br4"
}
|
