Speaker
Bruno Bucciotti
(Scuola Normale Superiore di Pisa)
Description
The scattering of charged massless fermions on magnetic monopoles at low-energy in the s-wave presents a long-standing final state puzzle: it seems to be generally impossible to construct an outgoing state conserving all charges. Indeed, bosonizing the low-energy EFT, one is seemingly led to particles of fractional charge.
In this talk I describe this problem starting from a UV complete chiral gauge theory, and descending to the EFT. This step allows us to discuss and exclude some existing proposed solutions to the puzzle. I will argue that the correct solution is introducing a topological operator.
I will conclude by commenting on non-abelian charges and some open problems.
Primary authors
Adrien Kuntz
(SISSA)
Bruno Bucciotti
(Scuola Normale Superiore di Pisa)
Enrico Trincherini
(SNS)
Leonardo Juliano
(Istituto Nazionale di Fisica Nucleare)
