Aug 8 – 13, 2022
Hörsaalzentrum Poppelsdorf
Europe/Berlin timezone

Charged Particles in C-periodic Volumes

Aug 9, 2022, 5:30 PM
CP1-HSZ/1st-1.001 - HS5 (CP1-HSZ)

CP1-HSZ/1st-1.001 - HS5


Oral Presentation Vacuum Structure, Confinement, and Chiral Symmetry Vacuum Structure, Confinement, and Chiral Symmetry


Uwe-Jens Wiese (University of Bern, Switzerland)


Charged particles in an Abelian Coulomb phase are non-local infra-particles that are surrounded by a cloud of soft photons which extends to infinity. Gauss' law prevents the existence of charged particles in a periodic volume. In a C-periodic volume, which is periodic up to charge conjugation, on the other hand, charged particles can exist. This includes vortices in the 3-d XY-model, magnetic monopoles in 4-d U(1) gauge theory, as well as protons and other charged particles in QCD coupled to QED. In four dimensions non-Abelian charges are confined. Hence, in an infinite volume non-Abelian infra-particles cost an infinite amount of energy. However, in a C-periodic volume non-Abelian infra-particles (whose energy increases linearly with the box size) can indeed exist. Investigating these states holds the promise of deepening our understanding of confinement.

Primary authors

Alessandro Mariani (University of Bern) Gurtej Kanwar (University of Bern) Uwe-Jens Wiese (University of Bern, Switzerland)

Presentation materials