Akce ČVUT

MAFIA Seminar: Andreas Fring - Goldstone's Theorem and Higgs Mechanism in Non-Abelian Non-Hermitian

25.02.2020   13:15

Srdečně vás zveme na další MAFIA Seminar. Hostem bude Andreas Fring (City, University of London) s příspěvkem "Goldstone's theorem and the Higgs mechanism in non-Abelian non-Hermitian quantum field theories". Seminář se koná od 13.15 hodin v místnosti T112.

We would like to invite you to the next MAFIA Seminar. The guest will be Andreas Fring (City, University of London) with a lecture "Goldstone's Theorem and Higgs Mechanism in Non-Abelian Non-Hermitian Quantum Field Theories". The seminar takes place in room T112 (FNSPE Trojanova 13, Prague 2) and it starts at 13.15.

Abstract:
We discuss how the Goldstone theorem and the Higgs mechanism in Abelian and non-Abelian quantum field theories can be extended to a non-Hermitian setting. For this purpose we study the interplay between spontaneously breaking of global continuous and discrete antilinear symmetries. These symmetries define different types of regimes of which the physical regions are bounded by exceptional points of different types in different ways. There exist special points in parameter space for which massless bosons may occur already before breaking the global symmetry. However, when the global symmetry is broken at these points they can no longer be distinguished from genuine Goldstone bosons. At these points not only the gauge mass vanishes, but also the Higgs mechanism breaks down.

Místo konání

Budova FJFI Trojanova 13, Praha 2

Pořadatel

Fakulta jaderná a fyzikálně inženýrská ČVUT v Praze

Kontaktní osoba

Ing. Matěj Tušek, Ph.D., matej.tusek@fjfi.cvut.cz