On the eigenvalues of operators with gaps. Application to Dirac operators
نویسندگان
چکیده
This paper is devoted to a general min-max characterization of the eigenvalues in a gap of the essential spectrum of a self-adjoint unbounded operator. We prove an abstract theorem, then we apply it to the case of Dirac operators with a Coulomb-like potential. The result is optimal for the Coulomb potential.
منابع مشابه
General results on the eigenvalues of operators with gaps, arising from both ends of the gaps. Application to Dirac operators
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تاریخ انتشار 2006