Séminaire de Physique ThéoriqueCollisions of solitons in non-integrable scalar theories
Yakov Shnir (University of Oldenburg)
Thursday 29 September 2022 14:00 - Salle des séminaires - Salle 1180, bâtiment E2
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.