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Effects of thermal inflation on small scale density perturbations

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dc.contributor.author Hong, Sungwook E. ko
dc.contributor.author Lee, Hyung-Joo ko
dc.contributor.author Lee, Young Jae ko
dc.contributor.author Stewart, Ewan D. ko
dc.contributor.author Zoe, Heeseung ko
dc.date.available 2015-09-03T01:55:18Z -
dc.date.created 2015-09-03 ko
dc.date.issued 2015-06 ko
dc.identifier.citation JOURNAL OF COSMOLOGY AND ASTROPARTICLE PHYSICS, v.2015, no.6, pp.002 ko
dc.identifier.issn 1475-7516 ko
dc.identifier.uri https://scholarworks.unist.ac.kr/handle/201301/16602 -
dc.description.abstract In cosmological scenarios with thermal inflation, extra eras of moduli matter domination, thermal inflation and flaton matter domination exist between primordial inflation and the radiation domination of Big Bang nucleosynthesis. During these eras, cosmological perturbations on small scales can enter and re-exit the horizon, modifying the power spectrum on those scales. The largest modified scale, k<inf>b</inf>, touches the horizon size when the expansion changes from deflation to inflation at the transition from moduli domination to thermal inflation. We analytically calculate the evolution of perturbations from moduli domination through thermal inflation and evaluate the curvature perturbation on the constant radiation density hypersurface at the end of thermal inflation to determine the late time curvature perturbation. Our resulting transfer function suppresses the power spectrum by a factor 0∼ 5 at k 蠑 k<inf>b</inf>, with k<inf>b</inf> corresponding to anywhere from megaparsec to subparsec scales depending on the parameters of thermal inflation. Thus, thermal inflation might be constrained or detected by small scale observations such as CMB distortions or 21cm hydrogen line observations. © 2015 IOP Publishing Ltd and Sissa Medialab srl ko
dc.description.statementofresponsibility close -
dc.language 영어 ko
dc.publisher IOP PUBLISHING LTD ko
dc.title Effects of thermal inflation on small scale density perturbations ko
dc.type ARTICLE ko
dc.identifier.scopusid 2-s2.0-84937852778 ko
dc.identifier.wosid 000359215400003 ko
dc.type.rims ART ko
dc.description.wostc 0 *
dc.description.scopustc 0 *
dc.date.tcdate 2015-12-28 *
dc.date.scptcdate 2015-11-04 *
dc.identifier.doi 10.1088/1475-7516/2015/06/002 ko
dc.identifier.url http://iopscience.iop.org/1475-7516/2015/06/002/ ko
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