Topological charge of Center Vortices
arXiv:hep-th/0208116 · doi:10.1016/S0920-5632(03)01638-4
Abstract
The topological charge of center vortices is discussed in terms of the self-intersection number of the closed vortex surfaces in 4-dimensional Euclidian space-time and in terms of the temporal changes of the writhing number of the time-dependent vortex loops in 3-dimensional space.
Proceedings, Lattice 2002, 3p, latex