Inflation, de Sitter Landscape and Super-Higgs effect
Abstract
We continue developing cosmological models involving nilpotent chiral superfields, which provide a simple unified description of inflation and the current acceleration of the universe in the supergravity context. We describe here a general class of models with a positive cosmological constant at the minimum of the potential, such that supersymmetry is spontaneously broken in the direction of the nilpotent superfield . In the unitary gauge, these models have a simple action where all highly non-linear fermionic terms of the classical Volkov-Akulov action disappear. We present masses for bosons and fermions in these theories. By a proper choice of parameters in this class of models, one can fit any possible set of the inflationary parameters and , a broad range of values of the vacuum energy , which plays the role of the dark energy, and achieve a controllable level of supersymmetry breaking. This can be done without introducing light moduli, such as Polonyi fields, which often lead to cosmological problems in phenomenological supergravity.
Cite
@article{arxiv.1411.5671,
title = {Inflation, de Sitter Landscape and Super-Higgs effect},
author = {Renata Kallosh and Andrei Linde and Marco Scalisi},
journal= {arXiv preprint arXiv:1411.5671},
year = {2015}
}
Comments
19 pages, comments on supersymmetry breaking are added