2 papers
hep-th2026
Asymptotic limits of constrained instantons
Benjamin Elder, Kinga Gawrych, Arttu Rajantie
We revisit the topic of false vacuum decay in field theory. We focus on a toy model of a real massive scalar field with an unstable quartic potential. This model has a false vacuum…
hep-th2026
Constrained instantons in scalar field theories
Benjamin Elder, Kinga Gawrych, Arttu Rajantie
Instantons, localised saddle points of the action, play an important role in describing non-perturbative aspects of quantum field theories, for example vacuum decay or violation of…