English

A-term inflation and the MSSM

High Energy Physics - Phenomenology 2010-10-27 v3 Astrophysics High Energy Physics - Theory

Abstract

The parameter space for A-term inflation is explored with W=λpϕp/(pMPp3)W=\lambda_p \phi^p/(p M_P^{p-3}). With p=6 and \lambda_p~1, the observed spectrum and spectral tilt can be obtained with soft mass of order 10^2 GeV but not with a much higher mass. The case p=3 requires \lambda_p~10^{-9} to 10^{-12}. The ratio m/A requires fine-tuning, which may be justified on environmental grounds. An extension of the MSSM to include non-renormalizable terms and/or Dirac neutrino masses might support either A-term inflation or modular inflation.

Keywords

Cite

@article{arxiv.hep-ph/0608299,
  title  = {A-term inflation and the MSSM},
  author = {J. C. Bueno Sanchez and K. Dimopoulos and David H. Lyth},
  journal= {arXiv preprint arXiv:hep-ph/0608299},
  year   = {2010}
}

Comments

10 pages, 3 figures; Comments added, typos corrected

R2 v1 2026-07-22T14:10:44.563Z