15-20 June 2014
Laurentian University / Université Laurentienne
America/Toronto timezone
Welcome to the 2014 CAP Congress! / Bienvenue au congrès de l'ACP 2014!

Tunneling and domain walls

18 Jun 2014, 09:45
C-114 (Laurentian University / Université Laurentienne)


Laurentian University / Université Laurentienne

Sudbury, Ontario
Oral (Non-Student) / orale (non-étudiant) Theoretical Physics / Physique théorique (DTP-DPT) (W1-4) Fields and Strings - DTP / Champs et cordes - DPT


Richard MacKenzie (U)


We consider a field theory model in 1+1 dimensions with a discrete internal symmetry. The model is such that the true vacuum respects this symmetry but it is broken in a pair of false vacua. Solitons interpolating between the false vacua necessarily pass through the true vacuum and are unstable. Adding a second scalar field, it is possible to stabilize the soliton against small fluctuations. Nonetheless, such a soliton will necessarily decay via quantum tunneling, just as the false vacuum itself is unstable. We analyse this phenomenon, and study whether the presence of solitons has a significant effect on the stability of a false vacuum.

Primary author


Luc Marleau (Université Laval) Manu Paranjape (U) Yvan Ung (U. Montréal)

Presentation Materials