Observational constraints on slow-roll inflation coupled to a Gauss-Bonnet term - INSPIRE

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Observational constraints on slow-roll inflation coupled to a Gauss-Bonnet term

Seoktae Koh
(
- Cheju Natl. U.
)
,
Bum-Hoon Lee
(
- CQUeST, Seoul and
- Sogang U.
)
,
Wonwoo Lee
(
- CQUeST, Seoul and
- Sogang U.
)
,
Gansukh Tumurtushaa
(
- CQUeST, Seoul and
- Sogang U.
)

Apr 24, 2014

11 pages

Published in:

Phys.Rev.D 90 (2014) 6, 063527

Published: Sep 29, 2014

e-Print:

1404.6096 [gr-qc]

DOI:

10.1103/PhysRevD.90.063527

View in:

ADS Abstract Service

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Abstract: (APS)

We study slow-roll inflation with a Gauss-Bonnet term that is coupled to an inflaton field nonminimally. We investigate the inflationary solutions for a specific type of the nonminimal coupling to the Gauss-Bonnet term and inflaton potential both analytically and numerically. We also calculate the observable quantities such as the power spectra of the scalar and tensor modes, the spectral indices, the tensor-to-scalar ratio, and the running spectral indices. Finally, we constrain our result with the observational data by Planck and BICEP2 experiment.

Note:

23 pages, 9 figures, typos corrected, references added, and some clarifications added including figures

98.80.Cq
04.62.+v
98.80.Jk
inflation: slow-roll approximation
coupling: nonminimal
power spectrum: scalar
inflaton: potential
Gauss-Bonnet term
numerical calculations

References(25)

Figures(9)

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