Collisions of solitons in non-integrable scalar theories

par Prof. Yakov Shnir (University of Oldenburg)

jeudi 29 sept. 2022, 14:00 → 15:00 Europe/Paris

Salle 1180, bâtiment E2 (Salle des séminaires )

We investigate soliton collisions a one-parameter family of scalar field theories in 1+1D. The models have a parametric dependent sextic potential with three local minima, and for suitably small values of the parameter its kinks have an internal structure in the form of two weakly-bound subkinks. We show that for these values of the parameter kink collisions are best understood as an independent sequence of collisions of these subkinks, and that a static mode analysis is not enough to explain resonant structures emerging in this model. We also emphasise the role of radiation and oscillon formation in the collision process.