Ruling Out Inflation Driven by a Power Law Potential: Kinetic Coupling Does Not Help
نویسندگان
چکیده
We demonstrate that the latest constraints on inflationary observables, namely tensor-to-scalar ratio $r$ and scalar spectral index $n_{_S}$, from Cosmic Background Radiation (CMB) observations are already strong enough to rule out model of a field with power law potential even in presence kinetic coupling gravity positive constant. The case for negative constant needs special treatment.
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ژورنال
عنوان ژورنال: Gravitation & Cosmology
سال: 2022
ISSN: ['0202-2893', '1995-0721']
DOI: https://doi.org/10.1134/s0202289322040028