English

Gauge invariant MSSM inflaton

High Energy Physics - Phenomenology 2008-11-26 v2 Astrophysics General Relativity and Quantum Cosmology High Energy Physics - Theory

Abstract

We argue that all the necessary ingredients for successful inflation are present in the flat directions of the Minimally Supersymmetric Standard Model. We show that out of many gauge invariant combinations of squarks, sleptons and Higgses, there are two directions, LLe{\bf LLe}, and udd{\bf udd}, which are promising candidates for the inflaton. The model predicts more than 10310^3 e-foldings with an inflationary scale of HinfO(110)H_{\rm inf}\sim {\cal O}(1-10) GeV, provides a tilted spectrum with an amplitude of δH105\delta_H\sim 10^{-5} and a negligible tensor perturbation. The temperature of the thermalized plasma could be as low as TrhO(110)T_{rh}\sim {\cal O}(1-10)~TeV. Parts of the inflaton potential can be determined independently of cosmology by future particle physics experiments.

Keywords

Cite

@article{arxiv.hep-ph/0605035,
  title  = {Gauge invariant MSSM inflaton},
  author = {Rouzbeh Allahverdi and Juan Garcia-Bellido and Kari Enqvist and Anupam Mazumdar},
  journal= {arXiv preprint arXiv:hep-ph/0605035},
  year   = {2008}
}

Comments

4 revtex pages, some references added, stabilization of moduli and supergravity effects are discussed

R2 v1 2026-07-22T14:08:23.025Z