False vacuum decay in kink scattering
Abstract
In this work we consider kinkantikink and antikinkkink collisions in a modified ϕ ^{4} model with a false vacuum characterized by a dimensionless parameter ɛ. The usual ϕ ^{4} model is recovered for ɛ = 0. We investigate the ɛ ≪ 1 regime where the kink in the presence of false vacuum can be understood as a small deformation of the standard kink for the ϕ ^{4} model. We show that the attractive interaction between the kinkantikink pair leads to a rich scattering pattern, in some cases delaying considerably the false vacuum decay.
 Publication:

Journal of High Energy Physics
 Pub Date:
 October 2018
 DOI:
 10.1007/JHEP10(2018)192
 arXiv:
 arXiv:1805.00991
 Bibcode:
 2018JHEP...10..192G
 Keywords:

 Solitons Monopoles and Instantons;
 Field Theories in Lower Dimensions;
 Nonperturbative Effects;
 High Energy Physics  Theory
 EPrint:
 16 pages, 17 figures