Physics – High Energy Physics – High Energy Physics - Phenomenology
Scientific paper
2007-06-11
Int.J.Mod.Phys.A22:5747-5759,2007
Physics
High Energy Physics
High Energy Physics - Phenomenology
13 pages including 3 figures, uses ws-ijmpa.cls, minor corrections included, talk given at the CTP Symposium on Supersymmetry
Scientific paper
10.1142/S0217751X07038980
Inflationary models with a superheavy scale F-term hybrid inflation followed by an intermediate scale modular inflation are considered. The restrictions on the power spectrum P_R of curvature perturbation and the spectral index n_s from the recent data within the power-law cosmological model with cold dark matter and a cosmological constant can be met provided that the number of e-foldings N_HI* suffered by the pivot scale k_*=0.002/Mpc during hybrid inflation is suitably restricted. The additional e-foldings needed for solving the horizon and flatness problems are generated by modular inflation with a string axion as inflaton. For central values of P_R and n_s, the grand unification scale comes out, in the case of standard hybrid inflation, close to its supersymmetric value M_GUT=2.86 x 10^16 GeV, the relevant coupling constant is relatively large (0.005-0.14), and N_HI* is between 10 and 21.7. In the shifted [smooth] hybrid inflation case, the grand unification scale can be identified with M_GUT for N_HI*=21 [N_HI*=18].
No associations
LandOfFree
Hybrid inflation followed by modular inflation does not yet have a rating. At this time, there are no reviews or comments for this scientific paper.
If you have personal experience with Hybrid inflation followed by modular inflation, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Hybrid inflation followed by modular inflation will most certainly appreciate the feedback.
Profile ID: LFWR-SCP-O-179170