Séminaire de Physique ThéoriqueTopological defects, deformed lattices and spontaneous symmetry breaking
Vincenzo Vitagliano (Université Keio, Japon)
jeudi 02 mai 2019 14:00 - Tours - Salle 1180 (Bât E2)
External conditions have a dramatic impact on the way symmetry breaking occurs. I will review some recent (and some less recent) results of symmetry breaking in curved spacetime. Flirting with the contemporary interest toward 2D engineered material, I will then move on potential applications on geometrically deformed lattices. In a curved background, the natural expectation is that curvature works toward the restoration of an internal symmetry. I will show instead that, for topological defects, the competing action of the locally induced curvature and boundary conditions generated by the non-trivial topology allows configurations where symmetries can be spontaneously broken close to the core.