1202.0011 (Mansoor Ur Rehman et al.)

Simplified Smooth Inflation with Observable Gravity Waves    [PDF]

Mansoor Ur Rehman, Qaisar Shafi

We consider a simplified version of supersymmetric smooth hybrid inflation
which contains a single ultraviolet cutoff m_P = 2.4 x 10^{18} GeV, instead of
the two cutoffs m_P and M_* ~ few x 10^{17} GeV that are normally employed.
With global supersymmetry the scalar spectral index n_s ~ 0.97, which is in
very good agreement with the WMAP observations. With a non-minimal Kahler
potential, the supergravity version of the model is compatible with the current
central values of n_s and also yields potentially observable gravity waves
(tensor to scalar ratio r <~ 0.02).

View original: http://arxiv.org/abs/1202.0011