Gravitational couplings of the inflaton in extended inflation
Abstract
We discuss a new extended-inflationary scenario evading the difficulties of the original model. Our model can thermalize the energy in the bubble walls by the necessary epoch, and establish a Robertson-Walker frame in the bubble clusters. The essential new ingredient in our model is the observation that the coupling of inflaton to the Jordan-Brans-Dicke field is expected to be different from that of visible matter.
- Publication:
-
Physical Review Letters
- Pub Date:
- July 1990
- DOI:
- Bibcode:
- 1990PhRvL..65...17H
- Keywords:
-
- Bubbles;
- Cosmology;
- Gravitational Fields;
- Inflating;
- Mathematical Models;
- String Theory;
- Couplings;
- Gravitational Effects;
- Scalars;
- Universe;
- Vacuum;
- Walls;
- Astrophysics;
- 98.80.Cq;
- 04.50.+h;
- Particle-theory and field-theory models of the early Universe;
- Gravity in more than four dimensions Kaluza-Klein theory unified field theories;
- alternative theories of gravity