Following the book of Friedrich "Dirac operators and riemannian geometry" (AMS, vol 25), I define the generalized Seiberg-Witten equations for (A,A′,ψ,ϕ), with A,A′ two connections and ψ,ϕ, two spinors:
1)
DA(ψ)=0
2)
DA′(ϕ)=0
3)
F+(A)=−(1/4)ω(ψ)
4)
F+(A′)=−(1/4)ω(ϕ)
5)
A−A′=Im(d<ψ|ϕ><ψ|ϕ>)
Im is the imaginary part of the complex number.
The gauge group (h,h′)∈Map(M,S1) acts over the solutions of the generalized Seiberg-Witten equations:
(h,h′).(A,A′,ψ,ϕ)=((1/h)∗A,(1/h′)∗A′,hψ,h′ϕ)
We have compact moduli spaces because it is a closed set in the product of two compact sets (the SW moduli spaces).
Moreover, the situation can perhaps be generalized to n solutions of the Seiberg-Witten equations (Ai,ψi):
1)
DAi(ψi)=0
2)
F+(Ai)=−(1/4)ω(ψi)
3)
Ai−Aj=Im(d<ψi|ψj><ψi|ψj>)