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hep-th2025
Instanton Corrections to the MSTB Kink Mass
Jarah Evslin, Alberto García Martín-Caro, Andrzej Wereszczyński
The Montonen-Sarker-Trullinger-Bishop (MSTB) model enjoys two classically degenerate kink solutions in the same topological sector. We construct the instanton that interpolates bet…
hep-th2025
Feshbach resonances and dynamics of BPS solitons
Alberto García Martín-Caro, Jose Queiruga, Andrzej Wereszczynski
We demonstrate that the geodesic dynamics of BPS solitons can be modified by the excitation of Feshbach resonances, or quasi-bound modes, in a toy model of two scalar fields. A mod…