Observational constraints on monomial warm inflation
Number of Authors: 1
2016 (English)In: Journal of Cosmology and Astroparticle Physics, ISSN 1475-7516, E-ISSN 1475-7516, no 7, 054Article in journal (Refereed) Published
Warm inflation is, as of today, one of the best motivated mechanisms for explaining an early inflationary period. In this paper, we derive and analyze the current bounds on warm inflation with a monomial potential U alpha phi(P), using the constraints from the PLANCK mission. In particular, we discuss the parameter space of the tensor-to-scalar ratio r and the potential. coupling A of the monomial warm inflation in terms of the number of e-folds. We obtain that the theoretical tensor-to-scalar ratio r similar to 10(-8) is much smaller than the current observational constrain r less than or similar to,0.12, despite a relatively large value of the field excursion Delta phi similar to 0.1 M-PI. Warm inflation thus eludes the Lyth bound set on the tensor-to-scalar ratio by the field excursion.
Place, publisher, year, edition, pages
2016. no 7, 054
inflation, particle physics - cosmology connection
IdentifiersURN: urn:nbn:se:su:diva-134171DOI: 10.1088/1475-7516/2016/07/054ISI: 000381830000055OAI: oai:DiVA.org:su-134171DiVA: diva2:1040784