Dynamics of ``logamediate'' inflation
Abstract
A computation of the inflationary observables ns and r is made for logamediate inflation where the cosmological scale factor expands as a=exp(A(lnt)λ), and is compared to their predicted values in the intermediate inflationary theory, where a=exp(Btf). Both versions prove to be consistent with observational measurements of the cosmic background radiation. It is shown that the dynamics of a single inflaton field can be mimicked by a system of several fields in an analogous manner to that created by the joint evolution of the fields in assisted power-law inflation.
- Publication:
-
Physical Review D
- Pub Date:
- August 2007
- DOI:
- 10.1103/PhysRevD.76.043501
- arXiv:
- arXiv:0705.4426
- Bibcode:
- 2007PhRvD..76d3501B
- Keywords:
-
- 98.80.Cq;
- Particle-theory and field-theory models of the early Universe;
- Astrophysics;
- General Relativity and Quantum Cosmology
- E-Print:
- 7 pages, 5 figures. Extended introduction