Abstract

A new scenario of hybrid-like inflation is considered for sneutrino and MSSM fields. Contrary to the usual hybrid inflation model, the direct coupling between a trigger field and the sneutrino/MSSM inflaton field is not necessary for the scenario. The dissipation and the radiation from the sneutrino/MSSM inflaton can be written explicitly by using the Yukawa couplings. Remote inflation does not require the shift symmetry or cancellation in solving the η problem.

Highlights

  • According to the recent cosmological observations, inflation has become the paradigm for early cosmology and appears to be the most successful cosmological model giving the primordial large scale structure of the Universe

  • In this paper we consider remote inflation for sneutrino inflation inflation caused by the scalar supersymmetric partner of a heavy singlet neutrino[5, 44] - and MSSM inflation - inflation caused by the fields in the minimal supersymmetric standard model (MSSM)[6, 7]

  • In this paper we applied a new scenario of hybrid-like inflation to sneutrino and MSSM inflaton fields

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Summary

Introduction

According to the recent cosmological observations, inflation has become the paradigm for early cosmology and appears to be the most successful cosmological model giving the primordial large scale structure of the Universe. With regard to the problems and the benefits of sneutrino/MSSM, hybrid and warm inflation scenarios, remote inflation may give a very attractive situation in which hybridlike inflation is realized in the warm inflationary regime without introducing additional direct coupling between the inflaton and a trigger field. The trigger fields σi in the remote inflation model are placed in a remote sector and stay in their false vacuum states during inflation due to the thermal effects created by the diffusion of the inflaton field. Σi at their false-vacuum state is not the effective mass m2σ ∼ g2φ2 caused by the direct coupling between the inflaton and the trigger field, but the thermal effect of the radiation concurrently produced during warm inflation. Is possible for a flat potential in supersymmetric theory, which gives typically the false-vacuum energy V0 ∼ m2σM2 for the quartic potential, where M2 ∼ m2σ/λ ≫ m2σ denotes the vacuum expectation value of the field σ in the true vacuum

Remote inflation with dissipative sneutrino
Slow-roll conditions and the sources of the cosmological perturbations
H Tc4 MN4
Spectral index
Leptogenesis
MSSM field as the inflaton
Baryogenesis for MSSM inflaton
Conclusions
A Thermal Inflation and reheating in the remote sector
B On thermal corrections to the MSSM inflaton
Full Text
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