Journal
JOURNAL OF COSMOLOGY AND ASTROPARTICLE PHYSICS
Volume -, Issue 8, Pages -Publisher
IOP PUBLISHING LTD
DOI: 10.1088/1475-7516/2008/08/009
Keywords
cosmology with extra dimensions; inflation; cosmology of theories beyond the SM
Funding
- The Korea Research Foundation
- The Korean Federation of Science and Technology Societies
- Korea Government (MOEHRD, Basic Research Promotion Fund) [KRF-2005-084-C00003]
- EU FP6 Marie Curie Research and Training Networks [MRTN-CT-2004-512194, HPRN-CT-2006-035863]
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Inflationary scenarios based on simple non-minimal coupling a phi R-2 and its generalizations are studied. Generalizing the form of non-minimal coupling to K(phi) R with an arbitrary function K(phi), we show that the. at potential is still obtainable when V (phi)/K-2(phi) is asymptotically constant. Very interestingly, if the ratio of the dimensionless self-coupling constant (lambda) of the inflaton fleld and the non-minimal coupling constant (a) is small, root lambda/a(2)similar to 10(-5), the cosmological observables for general monomial cases ( K similar to a phi(m), V similar to lambda phi(2m)) are in good agreement with recent observational data.
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