Swampland implications of GW170817-compatible Einstein-Gauss-Bonnet gravity

By Sergei D. Odintsov, V. Oikonomou. 2020

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We revisit the Einstein-Gauss-Bonnet theory in view of the GW170817 event, which compels that the gravitational wave speed is equal to $c_T^2=1$ in natural units. We use an alternative approach compared to one previous work of ours, which enables us to express all the slow-roll indices and the observational indices as functions of the scalar field. Using our formalism we investigate if the Swampland criteria are satisfied for the Einstein-Gauss-Bonnet theory and as we demonstrate, the Swampland criteria are satisfied for quite general forms of the potential and the Gauss-Bonnet coupling function $\xi (\phi)$, if the slow-roll conditions are assumed to hold true.

Subfields: Astronomy and Astrophysics, Nuclear and High Energy Physics

View Paper: https://www.semanticscholar.org/paper/ed0b54141d60a2eb26aa7d18f94875f6e4f2fbce

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