Abstract
We study the inflation with a Gauss-Bonnet term which is nonminimally coupled to a Dirac-Born-Infeld (DBI) field. We study the spectrum of primordial perturbations in this setup in detail. The non-Gaussianity of perturbations is considered and the amplitude of the non-Gaussianity is studied in both the equilateral and orthogonal configurations. By adopting various functions of the DBI field, the inflaton potential, and the Gauss-Bonnet coupling term, we test the model with recent observational data and find some constraints on the Gauss-Bonnet coupling parameter.
Sign-in/Register to access full text options 
Talk to us
Join us for a 30 min session where you can share your feedback and ask us any queries you have
Schedule a callDisclaimer: All third-party content on this website/platform is and will remain the property of their respective owners and is provided on "as is" basis without any warranties, express or implied. Use of third-party content does not indicate any affiliation, sponsorship with or endorsement by them. Any references to third-party content is to identify the corresponding services and shall be considered fair use under The CopyrightLaw.
