Construction of inflationary scenarios with the Gauss–Bonnet term and nonminimal coupling
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AbstractInflationary models with a scalar field nonminimally coupled both with the Ricci scalar and with the Gauss–Bonnet term are studied. We propose the way of generalization of inflationary scenarios with the Gauss–Bonnet term and a scalar field minimally coupled with the Ricci scalar to the corresponding scenarios with a scalar field nonminimally coupled with the Ricci scalar. Using the effective potential, we construct a set of models with the same values of the scalar spectral index $$n_s$$ n s and the amplitude of the scalar perturbations $$A_s$$ A s and different values of the tensor-to-scalar ratio r.
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2020 ◽
Vol 29
(10)
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pp. 2050077
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2009 ◽
Vol 18
(14)
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pp. 2173-2179
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2017 ◽
Vol 14
(06)
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pp. 1750088
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2014 ◽
Vol 11
(02)
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pp. 1460008