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Durham University

Department of Mathematical Sciences

Academic Staff

Publication details for Patrick Dorey

Dorey, Patrick, Halavanau, Aliaksei, Mercer, James, Romanczukiewicz, Tomasz & Shnir, Yasha (2017). Boundary scattering in the ϕ4 model. Journal of High Energy Physics 2017(5): 107.

Author(s) from Durham


We study boundary scattering in the ϕ4 model on a half-line with a oneparameter family of Neumann-type boundary conditions. A rich variety of phenomena is observed, which extends previously-studied behaviour on the full line to include regimes of near-elastic scattering, the restoration of a missing scattering window, and the creation of a kink or oscillon through the collision-induced decay of a metastable boundary state. We also study the decay of the vibrational boundary mode, and explore different scenarios for its relaxation and for the creation of kinks.