  We study the nature of the zero-temperature phase transition between a d-wave
superconductor and a Mott insulator in two dimensions. In this ``quantum
confinement transition'', spin and charge are confined to form the electron in
the Mott insulator. Within a dual formulation, direct transitions from d-wave
superconductors at half-filling to insulators with spin-Peierls (as well as
other) order emerge naturally. The possibility of striped superconductors is
also discussed within the dual formulation. The transition is described by
nodal fermions and bosonic vortices, interacting via a long-ranged statistical
interaction modeled by two, coupled Chern-Simons gauge fields, and the critical
properties of this model are discussed.
