Modified scalar and tensor spectra in spinor driven inflation

Details Modified scalar and tensor spectra in spinor driven inflation Modified scalar and tensor spectra in spinor driven inflation

2008-07-21

arxiv.org/abs/0807.3336v2

JCAP 1001:008,2010

Astronomy and Astrophysics

Astrophysics

11 pages, Revtex4; Titled renamed, References added, Matches with the journal version

Scientific paper

10.1088/1475-7516/2010/01/008

One of the firm predictions of the single-scalar field inflationary cosmology is the consistency relation between the scalar and tensor perturbations. It has been argued that such a relation, if observationally verified, would offer strong support for the idea of inflation. In this letter, we critically analyze the validity of the consistency relation in the context of spinflation. Spinflaton -- a scalar condensate of the Elko field -- has a single scalar degree of freedom and leads to the identical acceleration equation as the single canonical scalar field. We obtain the perturbation equations for the Einstein-Elko system and show that (i) The scalar perturbations are purely adiabatic and speed of the perturbations is identically one. (ii) In the slow-roll limit, the scalar and tensor perturbations are nearly scale-invariant and (iii) Obtain the consistency relations for the scalar and tensor spectra.

Affiliated with

Also associated with

No associations

Rating

Modified scalar and tensor spectra in spinor driven inflation does not yet have a rating. At this time, there are no reviews or comments for this scientific paper.

If you have personal experience with Modified scalar and tensor spectra in spinor driven inflation, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Modified scalar and tensor spectra in spinor driven inflation will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFWR-SCP-O-435213