%0 Journal Article %T The Kohn Variational Principle for Elastic Proton--Deuteron Scattering above Deuteron Breakup Threshold %A M. Viviani %A A. Kievsky %A S. Rosati %J Physics %D 2001 %I arXiv %R 10.1007/s006010170017 %X The Kohn variational principle is formulated for calculating elastic proton-deuteron scattering amplitudes at energies above the deuteron breakup threshold. The use of such a principle with an expansion of the wave function on the (correlated) hyperspherical harmonic basis is discussed. %U http://arxiv.org/abs/nucl-th/0102048v1