| Full text | |
| Author(s): |
Graef, L. L.
;
Brandenberger, R.
Total Authors: 2
|
| Document type: | Journal article |
| Source: | Journal of Cosmology and Astroparticle Physics; v. N/A, n. 10, p. 10-pg., 2015-10-01. |
| Abstract | |
Standard inflationary models yield a characteristic signature of a primordial power spectrum with a red tensor and scalar tilt. Nevertheless, Cannone et al. [1] recently suggested that, by breaking the assumption of spatial diffeomorphism invariance in the context of the effective field theory of inflation, a blue tensor spectrum can be achieved without violating the Null Energy Condition. In tins context, we explore in which cases the inflationary model of [1] can yield a blue tilt of the tensor modes along with a red tilt in the scalar spectrum. Ultimately, we analyze under which conditions the model of [1] can reproduce the specific consistency relation of String Gas Cosmology. (AU) | |
| FAPESP's process: | 12/09380-8 - Vacuum decay, warm inflation and its connections with the current accelerated stage of the universe: conceptual aspects and observational tests |
| Grantee: | Leila Lobato Graef |
| Support Opportunities: | Scholarships in Brazil - Doctorate |