Domain walls without a potential - INSU - Institut national des sciences de l'Univers Accéder directement au contenu
Article Dans Une Revue Phys.Rev.D Année : 2021

Domain walls without a potential

Résumé

We show that domain walls, or kinks, can be constructed in simple scalar theories where the scalar has no potential. These theories belong to a class of k-essence where the Lagrangian vanishes identically when one lets the derivatives of the scalar vanish. The domain walls we construct have positive energy and stable quadratic perturbations. As particular cases, we find families of theories with domain walls and their quadratic perturbations identical to the ones of the canonical Mexican hat or sine-Gordon scalar theories. We show that canonical and noncanonical cases are nevertheless distinguishable via higher order perturbations or a careful examination of the energies. In particular, in contrast to the usual case, our walls are local minima of the energy among the field configuration having some fixed topological charge, but not global minima.
Fichier principal
Vignette du fichier
PhysRevD.103.036010.pdf (625.29 Ko) Télécharger le fichier
Origine : Fichiers éditeurs autorisés sur une archive ouverte

Dates et versions

hal-02946177 , version 1 (12-08-2022)

Identifiants

Citer

Cédric Deffayet, François Larrouturou. Domain walls without a potential. Phys.Rev.D, 2021, 103 (3), pp.036010. ⟨10.1103/PhysRevD.103.036010⟩. ⟨hal-02946177⟩
75 Consultations
44 Téléchargements

Altmetric

Partager

Gmail Facebook X LinkedIn More