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Multidimensional gravity with higher derivatives and inflation

Júlio C. Fabris
(
- Espirito Santo U. and
- Moscow Phys. Eng. Inst.
)
,
Arkady A. Popov
(
- Kazan State U.
)
,
Sergey G. Rubin
(
- Kazan State U. and
- Moscow Phys. Eng. Inst.
)

Nov 9, 2019

12 pages

Published in:

Phys.Lett.B 806 (2020) 135458

Published: Jul 10, 2020

e-Print:

1911.03695 [gr-qc]

DOI:

10.1016/j.physletb.2020.135458 (publication)

View in:

reference search12 citations

Citations per year

Abstract: (arXiv)

We elaborate on the inflationary model starting from multidimensional Lagrangian and gravity with second-order curvature terms. The effective scalar field is related to the Ricci scalar of extra dimensions. It is shown that the Kretschmann and the Ricci tensor square terms dominate during inflation. The observable values of the spectral index and the tensor-to-scalar ratio are obtained for specific values of the model parameters.

Note:

12 pages

Multidimensional gravity
Higher derivatives
Inflation
inflation: model
scalar: Ricci
field theory: scalar
derivative: high
tensor: Ricci
higher-dimensional
gravitation

References(25)

Figures(1)

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