Inflation and reheating in scale-invariant scalar-tensor gravity View Full Text


Ontology type: schema:ScholarlyArticle      Open Access: True


Article Info

DATE

2017-04

AUTHORS

Giovanni Tambalo, Massimiliano Rinaldi

ABSTRACT

We consider the scale-invariant inflationary model studied in Rinaldi and Vanzo (Phys Rev D 94: 024009, 2016). The Lagrangian includes all the scale-invariant operators that can be built with combinations of R,R2 and one scalar field. The equations of motion show that the symmetry is spontaneously broken after an arbitrarily long inflationary period and a fundamental mass scale is generated. Upon symmetry breaking, and in the Jordan frame, both Hubble function and the scalar field undergo damped oscillations that can eventually amplify Standard Model fields and reheat the Universe. In the present work, we study in detail inflation and the reheating mechanism of this model in the Einstein frame and we compare some of the results with the latest observational data. More... »

PAGES

52

Identifiers

URI

http://scigraph.springernature.com/pub.10.1007/s10714-017-2217-8

DOI

http://dx.doi.org/10.1007/s10714-017-2217-8

DIMENSIONS

https://app.dimensions.ai/details/publication/pub.1084518575


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