https://doi.org/10.1140/epjc/s10052-021-09862-7
Regular Article - Theoretical Physics
Reheating after inflation by supersymmetry breaking
1
Department of Physics, Faculty of Science, Chulalongkorn University, Phayathai Road, Pathumwan, 10330, Bangkok, Thailand
2
Department of Theoretical and Nuclear Physics, Faculty of Physics and Technology, Al-Farabi Kazakh National University, 71 Al-Farabi Ave., 050040, Almaty, Kazakhstan
3
Laboratoire de Physique Théorique et Hautes Energies (LPTHE), Sorbonne Université, CNRS, 4 Place Jussieu, 75005, Paris, France
Received:
9
October
2021
Accepted:
21
November
2021
Published online:
7
December
2021
We study reheating after the end of inflation in models where the inflaton is the superpartner of goldstino and is charged under a gauged U(1) R-symmetry. We consider two classes of models – one is small field characterized by an almost flat Kähler space, and the other large field characterized by a hyperbolic Kähler space SU(1, 1)/U(1), while in both cases the inflaton superpotential is linear due to the R-symmetry. The inflationary observables of our models fit within 2
CMB values. Upon coupling the inflaton sector to the (supersymmetric) Standard Model, we compute the MSSM parameters, mass spectrum, and decay modes of the inflaton, with the resulting reheating temperature around 
GeV. We also find that both models can accommodate superheavy LSP dark matter, depending on the parameter choice.
© The Author(s) 2021
Open Access This article is licensed under a Creative Commons Attribution 4.0 International License, which permits use, sharing, adaptation, distribution and reproduction in any medium or format, as long as you give appropriate credit to the original author(s) and the source, provide a link to the Creative Commons licence, and indicate if changes were made. The images or other third party material in this article are included in the article’s Creative Commons licence, unless indicated otherwise in a credit line to the material. If material is not included in the article’s Creative Commons licence and your intended use is not permitted by statutory regulation or exceeds the permitted use, you will need to obtain permission directly from the copyright holder. To view a copy of this licence, visit http://creativecommons.org/licenses/by/4.0/.
Funded by SCOAP3
