par Faraoni, Valerio 
Référence International journal of theoretical physics, 40, 12, page (2259-2294)
Publication Publié, 2001
Référence International journal of theoretical physics, 40, 12, page (2259-2294)
Publication Publié, 2001
Article révisé par les pairs
| Résumé : | Nonminimal coupling of the inflaton field to the Ricci curvature of spacetime is generally unavoidable, and the paradigm of inflation should be generalized by including the corresponding term ξRφ2/2 in the Lagrangian of the inflationary theory. This paper reports on the status of the programme of generalizing inflation. First, the problem of finding the correct value (or set of values) of the coupling constant ξ is analyzed; the result has important consequences for the success or failure of inflationary scenarios. Then, the slow-roll approximation to generalized inflation is studied. Both the unperturbed inflating universe models and scalar/tensor perturbations are discussed, and open problems are pointed out. © 2001 Plenum Publishing Corporation. |
