Applications of the AdS/CFT correspondence and string cosmology
Particle physics and Gravity Beyond the Standard Model: Warped structures, Chamele...
Gravitation theory: perturbations of gravitational systems in string theories
| Full text | |
| Author(s): |
Bernardo, Heliudson
;
Costa, Renato
;
Nastase, Horatiu
;
Weltman, Amanda
Total Authors: 4
|
| Document type: | Journal article |
| Source: | Journal of Cosmology and Astroparticle Physics; v. N/A, n. 4, p. 29-pg., 2019-04-01. |
| Abstract | |
We investigate the possibility that the inflaton, in particular in conformal inflation models, is also a chameleon, i.e. that it couples to the energy density of some heavy non-relativistic matter present during inflation. We find new and interesting attractor-like behaviours, either prolonging inflation, or changing the observables n(s), r, depending on the sign of the chameleon coupling exponent. We also check that the chameleon coupling with the heavy matter field strongly suppresses entropy modes during inflation. (AU) | |
| FAPESP's process: | 14/18634-9 - Gauge/Gravity duality |
| Grantee: | Victor de Oliveira Rivelles |
| Support Opportunities: | Research Projects - Thematic Grants |
| FAPESP's process: | 16/01343-7 - ICTP South American Institute for Fundamental Research: a regional center for theoretical physics |
| Grantee: | Nathan Jacob Berkovits |
| Support Opportunities: | Special Projects |