Infinitely many small exotic Stein fillings
arXiv:1208.1053
Abstract
We show that there exist infinitely many simply connected compact Stein 4-manifolds with b_2=2 such that they are all homeomorhic but mutually non-diffeomorphic, and they are Stein fillings of the same contact 3-manifold on their boundaries. We also describe their handlebody pictures.
9 pages, 7 figures, revised, a new section added