van de Bruck, C., Dunsby, P. and Paduraru, L.E. (2017) Reheating and preheating in the simplest extension of Starobinsky inflation. International Journal of Modern Physics D. ISSN 0218-2718
Abstract
The epochs of reheating and preheating are studied in a simple extension of the Starobin- sky inflationary model, which consists of an R 2 -correction to the Einstein–Hilbert action and an additional scalar field. We find that if the R 2 -correction at the end of inflation is dynamically important, it affects the expansion rate and as a consequence, the reheating and preheating processes. While we find that the reheating temperature and duration of reheating are only slightly affected, the effect has to be taken into account when comparing the theory to data. In the case of preheating, the gravitational corrections can significantly affect the decay of the second field. We find that particle production is strongly affected for certain values of the parameters in the theory.
Metadata
Item Type: | Article |
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Authors/Creators: |
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Copyright, Publisher and Additional Information: | © 2017 World Scientific Publishing Company. |
Keywords: | Cosmology; inflation |
Dates: |
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Institution: | The University of Sheffield |
Academic Units: | The University of Sheffield > Faculty of Science (Sheffield) > School of Mathematics and Statistics (Sheffield) |
Depositing User: | Symplectic Sheffield |
Date Deposited: | 19 Oct 2017 10:01 |
Last Modified: | 19 Oct 2017 10:04 |
Published Version: | https://doi.org/10.1142/S0218271817501528 |
Status: | Published |
Publisher: | World Scientific Publishing |
Refereed: | Yes |
Identification Number: | 10.1142/S0218271817501528 |
Open Archives Initiative ID (OAI ID): | oai:eprints.whiterose.ac.uk:122812 |