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- W2892328077 abstract "One class of single-field inflationary models compatible with the recently-conjectured Swampland criteria would be those in which a Hubble slow-roll parameter $epsilon_text{H}$ is not the same as $epsilon_text{V} sim (V'/V)^2$. However, a roadblock for these models (with a convex potential) lie in the unacceptably high tensor-to-scalar ratio, $r$, generically predicted by them. In this work, illustrating through an explicit example, we point out that having a non-Bunch-Davies component to the initial state of cosmological perturbations makes the value of $r$ compatible with observations. In this way, we lay down a new path even for standard models of slow-roll inflation to be consistent with the Swampland criteria by invoking deviations from the Bunch-Davies initial state." @default.
- W2892328077 created "2018-09-27" @default.
- W2892328077 creator A5024154095 @default.
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- W2892328077 date "2019-03-01" @default.
- W2892328077 modified "2023-09-27" @default.
- W2892328077 title "Avoiding the string swampland in single-field inflation: excited initial states" @default.
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- W2892328077 doi "https://doi.org/10.1007/jhep03(2019)006" @default.
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