%0 Journal Article
%T Self-adjointness via partial Hardy-like inequalities
%A Maria J. Esteban
%A Michael Loss
%J Mathematics
%D 2008
%I arXiv
%X Distinguished selfadjoint extensions of operators which are not semibounded can be deduced from the positivity of the Schur Complement (as a quadratic form). In practical applications this amounts to proving a Hardy-like inequality. Particular cases are Dirac-Coulomb operators where distinguished selfadjoint extensions are obtained for the optimal range of coupling constants.
%U http://arxiv.org/abs/0805.4675v1