The Callan Rubakov Effect


Brennan, D. (2023). The Callan Rubakov Effect. Perimeter Institute. https://pirsa.org/23100072


Brennan, Dan. The Callan Rubakov Effect. Perimeter Institute, Oct. 03, 2023, https://pirsa.org/23100072


          @misc{ pirsa_PIRSA:23100072,
            doi = {10.48660/23100072},
            url = {https://pirsa.org/23100072},
            author = {Brennan, Dan},
            keywords = {Particle Physics},
            language = {en},
            title = {The Callan Rubakov Effect},
            publisher = {Perimeter Institute},
            year = {2023},
            month = {oct},
            note = {PIRSA:23100072 see, \url{https://pirsa.org}}
Talk Type Scientific Series


The Callan Rubakov Effect describes the interaction between (massless) fermions and a smooth monopole in 4d gauge theory. In this scenario, the fermions can probe the UV physics inside the monopole core which leads to interesting effects such as proton decay in GUT models. However, the monopole-fermion scattering appears to lead to out-states that are not in the perturbative Hilbert space. In this talk, we will review this issue and propose a new physical mechanism that resolves this long-standing confusion.


Zoom link: https://pitp.zoom.us/j/93551249905?pwd=REJvOUtTMlh6RU0vRjZnRVdZckgyZz09