5–7 déc. 2022
Tours
Fuseau horaire Europe/Paris

Consistent propagation of spin 3/2 and 2 in an electromagnetic background

5 déc. 2022, 16:15
45m
Amphi E030, bâtiment E2, rez-de-chaussée (Tours)

Amphi E030, bâtiment E2, rez-de-chaussée

Tours

Institut Denis Poisson Université de Tours Facultés des Sciences et Techniques Parc de Grandmont 37200 Tours FRANCE

Orateur

Wenqi Ke (LPTHE)

Description

Consistent equations of motion and Lagrangian for higher spin states is an old problem which is still under investigation. One important challenge comes from the "Velo-Zwanziger problem", which states that charged massive particles of spin>1, minimally coupled to an external electromagnetic field, suffer from acausality and loss of hyperbolicity. In this talk, I will present explicit consistent Lagrangians describing charged massive spin-3/2 and spin-2. Though coupled in the Lagrangian to lower spins, they appear decoupled in the resulting equations of motion.

Auteur principal

Wenqi Ke (LPTHE)

Documents de présentation