  This work was inspired by the article of Parkhomenko, who drew attention to
the central role played in the work of Spindel, Sevrin, Troust and van Proyen,
by Manin triples. These authors have shown how to associate to a Manin triple
an $N=2$ superconformal field theory (the work of Kazama-Suzuki is a special
case of their results). In this paper, we construct a deformation of their
theory, with continuously varying central charge, analogous to the Fock
representations of the Virasoro algebra with stress-energy tensor
$-(\phi')^2/2+\alpha\phi''$.
