Quantum cohomology of the Grassmannian and alternate Thom-Sebastiani
  We introduce the notion of alternate product of Frobenius manifolds and we give, after [math.AG/0610265], an interpretation of the Frobenius manifold structure canonically attached to the quantum cohomology of G(r,n+1) in terms of alternate products. We also investigate the relationship with the alternate Thom-Sebastiani product of Laurent polynomials. 
Bumsig Kim and Claude Sabbah