par Faraoni, Valerio 
Référence Physical Review D - Particles, Fields, Gravitation and Cosmology, 62, 2, page (1-15), 023504
Publication Publié, 2000-07
Référence Physical Review D - Particles, Fields, Gravitation and Cosmology, 62, 2, page (1-15), 023504
Publication Publié, 2000-07
Article révisé par les pairs
| Résumé : | The nonminimal coupling (NMC) of the scalar field to the Ricci curvature is unavoidable in many cosmological scenarios. Inflation and quintessence models based on nonminimally coupled scalar fields are studied, with particular attention to the balance between the scalar potential and the NMC term ξRφ2/2 in the action. NMC makes acceleration of the universe harder to achieve for the usual potentials, but it is beneficial in obtaining cosmic acceleration with unusual potentials. The slow-roll approximation with NMC, conformal transformation techniques, and other aspects of the physics of NMC are clarified. ©2000 The American Physical Society. |
