Cassano, Biagio; Pizzichillo, Fabio; Vega, Luis A Hardy-type inequality and some spectral characterizations for the Dirac-Coulomb operator. (English) Zbl 1436.81042 Rev. Mat. Complut. 33, No. 1, 1-18 (2020). MSC: 81Q10 47N20 35P05 47B25 PDFBibTeX XMLCite \textit{B. Cassano} et al., Rev. Mat. Complut. 33, No. 1, 1--18 (2020; Zbl 1436.81042) Full Text: DOI arXiv
Cassano, Biagio; Pizzichillo, Fabio Boundary triples for the Dirac operator with Coulomb-type spherically symmetric perturbations. (English) Zbl 1414.81086 J. Math. Phys. 60, No. 4, 041502, 13 p. (2019). MSC: 81Q05 81R20 47B25 PDFBibTeX XMLCite \textit{B. Cassano} and \textit{F. Pizzichillo}, J. Math. Phys. 60, No. 4, 041502, 13 p. (2019; Zbl 1414.81086) Full Text: DOI arXiv
Cassano, Biagio; Pizzichillo, Fabio Self-adjoint extensions for the Dirac operator with Coulomb-type spherically symmetric potentials. (English) Zbl 1403.81017 Lett. Math. Phys. 108, No. 12, 2635-2667 (2018). MSC: 81Q10 47N20 47N50 47B25 PDFBibTeX XMLCite \textit{B. Cassano} and \textit{F. Pizzichillo}, Lett. Math. Phys. 108, No. 12, 2635--2667 (2018; Zbl 1403.81017) Full Text: DOI arXiv