%0 Journal Article %T Remarks on the spectrum of the Dirac operator %A Nicolas Ginoux %J Mathematics %D 2003 %I arXiv %X We describe a new family of examples of hypersurfaces in the sphere satisfying the limiting-case in C. B\"ar's extrinsic upper bound for the smallest eigenvalue of the Dirac operator. %U http://arxiv.org/abs/math/0306062v1