We extend Seiberg-Witten theory to 4-manifolds with b_+=0. The moduli space of irreducible monopoles depends in this case on a parameter varying in an infinite dimensional space which is divided into a countable family of chambers by a codimension-1 wall. The Seiberg-Witten invariant associated with a class of Spin^c-structures is a functorial map which assigns an integer to every chamber and satisfies a universal wall-crossing formula for transversal wall-crossing; it should be regarded as a distinguished element in the Z-torsor of functions satisfying the wall-crossing formula. The Seiberg-Witten invariant for a 3-manifold with b_1=0 is completely determined by the 4-dimensional invariant of the product with a circle. When the base manifold is a complex surface, a Kobayashi-Hitchin-type correspondence allows us to compute the invariants in the so-called complex geometric chambers by counting complex curves.
@article{hal-00881762,
author = {Teleman, Andrei and Okonek, Christian},
title = {Seiberg-Witten invariants for 4-manifolds with b\_+=0},
journal = {HAL},
volume = {2000},
number = {0},
year = {2000},
language = {en},
url = {http://dml.mathdoc.fr/item/hal-00881762}
}
Teleman, Andrei; Okonek, Christian. Seiberg-Witten invariants for 4-manifolds with b_+=0. HAL, Tome 2000 (2000) no. 0, . http://gdmltest.u-ga.fr/item/hal-00881762/