Small exotic Stein manifolds
arXiv:0807.3815
Abstract
It is known that the only Stein filling of the standard contact structure on S^3 is B^4. In this paper, we construct simply connected exotic compact Stein 4-manifold pairs for any Betti number ; we do this by enlarging corks and plugs.
15 pages, 17 figures, revised version, to appear in Commentarii Mathematici Helvetici