Manabu Iyanaga
A generalization of the Stokes theorem is derived for the path-order phase factor in nonabelian gauge theories. It is proved that the curvature form vanishes identically if and only if the connection form is pure gauge.
F. V. Gubarev
Shintani, Meiun
S. Sciuto
H. Kleinert
Shauna KravecJohn McGreevy