Identifying the inflaton with primordial gravitational waves

Damien Easson, Brian A. Powell

Research output: Contribution to journalArticle

8 Citations (Scopus)

Abstract

We explore the ability of experimental physics to uncover the underlying structure of the gravitational Lagrangian describing inflation. While the observable degeneracy of the inflationary parameter space is large, future measurements of observables beyond the adiabatic and tensor two-point functions, such as non-Gaussianity or isocurvature modes, might reduce this degeneracy. We show that, even in the absence of such observables, the range of possible inflaton potentials can be reduced with a precision measurement of the tensor spectral index, as might be possible with a direct detection of primordial gravitational waves.

Original languageEnglish (US)
Article number191302
JournalPhysical Review Letters
Volume106
Issue number19
DOIs
StatePublished - May 11 2011

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gravitational waves
tensors
physics

ASJC Scopus subject areas

  • Physics and Astronomy(all)

Cite this

Identifying the inflaton with primordial gravitational waves. / Easson, Damien; Powell, Brian A.

In: Physical Review Letters, Vol. 106, No. 19, 191302, 11.05.2011.

Research output: Contribution to journalArticle

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