Princeton University Exoplanet Discussion Group
Chaotic Dynamical Tides and Efficient Hot Jupiter Formation
High-eccentricity (high-e) migration may be an important channel for the formation of hot Jupiters (HJs). In this scenario, a giant planet is excited onto a very eccentric orbit that decays and circularizes on Gyr timescales due to tidal effects in the planet. Previous studies of high-e migration have use parameterized treatments of weak tidal friction and overlooked critical contributions from dynamical tides. I demonstrate that the inclusion of chaotic dynamical tides can endow high-e migration with several favorable features to explain observations of HJs.