期刊
EUROPEAN PHYSICAL JOURNAL C
卷 80, 期 7, 页码 -出版社
SPRINGER
DOI: 10.1140/epjc/s10052-020-8176-3
关键词
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We construct models with the Gauss-Bonnet term multiplied by a function of the scalar field leading to an inflationary scenario. The consideration is related to the slow-roll approximation. The cosmological attractor approach gives the spectral index of scalar perturbations which is in a good agreement with modern observation and allows for variability of the tensor-to-scalar ratio. We reconstruct models with variability of parameters, which allows one to reproduce cosmological attractor predictions for inflationary parameters in an approximation of the leading order of 1/Nin Einstein-Gauss-Bonnet gravity.
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