Mathematics – Analysis of PDEs
Scientific paper
2005-10-28
Mathematics
Analysis of PDEs
Scientific paper
This paper is concerned with {an extension and reinterpretation} of previous results on the variational characterization of eigenvalues in gaps of the essential spectrum of self-adjoint operators. {We state} two general abstract results on the existence of eigenvalues in the gap and a continuation principle. Then, these results are applied to Dirac operators in order to characterize simultaneously eigenvalues corresponding to electronic and positronic bound states.
Dolbeault Jean
Esteban Maria J.
Séré Eric
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