Speaker
Mr
Digesh Raut
(Department of Physics, University of Alabama)
Description
We consider $\lambda \phi^4$ inflation with non-minimal gravitational coupling in the context of the minimal B-L extension of the Standard Model, where the B-L Higgs field with a $+2$ B-L charge is identified as an inflaton. When quantum corrections for the inflation potential are taken into account, the instability of the potential occurs because of the small quartic coupling during the inflation.Imposing a condition on the beta function of the quartic coupling to remove the instability, we analyze the slow-roll inflation scenario to obtain the inflationary predictions as well as predictions for low energy observables such as the mass ratio of the B-L gauge boson to the right handed neutrinos and the inflaton mass. With the correlations between the inflationary predictions and the low energy observables, more precise measurements of the inflationary predictions in the future experiments can give a more severe constraint on low energy observables. On the other hand, search for the minimal B-L model can also provide constraint on the inflationary predictions.
Author
Mr
Digesh Raut
(Department of Physics, University of Alabama)
Co-author
Mr
Nobuchika Okada
(Department of Physics, University of Alabama)
