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Beating the Lyth Bound by Parametric Resonance during Inflation
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(PDF) The Lyth Bound of Inflation with a Tilt - ResearchGate
Splet22. avg. 2024 · The swampland criteria are generically in tension with single-field slow-roll inflation because the first swampland criterion requires small tensor-to-scalar ratio while the second swampland criterion requires either large tensor-to-scalar ratio or large scalar spectral tilt. The challenge to single-field slow-roll inflation imposed by the swampland … In cosmological inflation, within the slow-roll paradigm, the Lyth argument places a theoretical upper bound on the amount of gravitational waves produced during inflation, given the amount of departure from the homogeneity of the cosmic microwave background (CMB). SpletThis is known as the “Lyth bound. ” From the effective field theory standpoint, this is surprising, since Planck-suppressed operators are expected to spoil the flatness of the … spider tech full knee