TY  - JOUR
PB  - SciPost Foundation
DO  - 10.21468/SciPostPhys.20.1.013
TI  - Dynamical edge modes in Yang-Mills theory
PY  - 2026/01/19
UR  - https://scipost.org/SciPostPhys.20.1.013
JF  - SciPost Physics
JA  - SciPost Phys.
VL  - 20
IS  - 1
SP  - 013
A1  - Ball, Adam
AU  - Ciambelli, Luca
AB  - We study the symplectic structure and dynamics of Yang-Mills theory in the presence of a boundary. We introduce a decomposition of the fields on a Cauchy slice such that the symplectic form splits cleanly into independent bulk and edge parts. However, we find that the dynamics inherently couples these two symplectic sectors, a feature arising from the non-abelian nature of the gauge group. This is shown by extending to Yang-Mills theory the dynamical edge mode boundary condition recently introduced in Maxwell theory. We finish with analyses of the weak-field expansion and the horizon limit, finding in the latter case that the dynamical interplay between bulk and edge degrees of freedom persists.
ER  -

@Article{10.21468/SciPostPhys.20.1.013,
	title={{Dynamical edge modes in Yang-Mills theory}},
	author={Adam Ball and Luca Ciambelli},
	journal={SciPost Phys.},
	volume={20},
	pages={013},
	year={2026},
	publisher={SciPost},
	doi={10.21468/SciPostPhys.20.1.013},
	url={https://scipost.org/10.21468/SciPostPhys.20.1.013},
}