Doubly Periodic Instanton Zero Modes
arXiv:hep-th/0505214 · doi:10.1016/j.physletb.2005.08.094
Abstract
Fermionic zero modes associated with doubly periodic SU(2) instantons of unit charge are considered. In cases where the action density exhibits two `instanton cores' the zero mode peaks on one of four line-segments joining the two constituents. Which of the four possibilities is realised depends on the fermionic boundary conditions; doubly periodic, doubly anti-periodic or mixed.
12 pages, 4 figures