Maria J. Esteban, Michael Loss
Self-adjointness for Dirac operators via Hardy-Dirac inequalities
(330K, Postscript)

ABSTRACT.  Distinguished selfadjoint extension of Dirac operators are  
constructed for a class of potentials including Coulombic ones up to  
the critical case, $-|x|^{-1}$. The method uses Hardy-Dirac  
inequalities and quadratic form techniques.