Behrndt, Jussi; Exner, Pavel; Ichinose, Takashi; Malamud, Mark M.; Zagrebnov, Valentin A. Hagen Neidhardt (1950–2019) – his work and legacy. (English) Zbl 1432.01080 Eur. Math. Soc. Newsl. 115, 25-30 (2020). MSC: 01A70 PDFBibTeX XMLCite \textit{J. Behrndt} et al., Eur. Math. Soc. Newsl. 115, 25--30 (2020; Zbl 1432.01080) Full Text: DOI
Behrndt, Jussi; Malamud, Mark M.; Neidhardt, Hagen Scattering matrices and Dirichlet-to-Neumann maps. (English) Zbl 1376.35011 J. Funct. Anal. 273, No. 6, 1970-2025 (2017). Reviewer: Christian Seifert (Hamburg) MSC: 35J10 35P25 47A40 81U20 PDFBibTeX XMLCite \textit{J. Behrndt} et al., J. Funct. Anal. 273, No. 6, 1970--2025 (2017; Zbl 1376.35011) Full Text: DOI arXiv
Behrndt, Jussi; Malamud, Mark M.; Neidhardt, Hagen Finite rank perturbations, scattering matrices and inverse problems. (English) Zbl 1192.47008 Behrndt, Jussi (ed.) et al., Recent advances in operator theory in Hilbert and Krein spaces. Papers of the 7th workshop on operator theory in Krein spaces and spectral analysis, TU Berlin, Germany, December 13–16, 2007. Dedicated to Peter Jonas. Basel: Birkhäuser (ISBN 978-3-0346-0179-5/hbk; 978-3-0346-0180-1/ebook). Operator Theory: Advances and Applications 198, 61-85 (2010). MSC: 47A40 81U40 47A55 47B44 PDFBibTeX XMLCite \textit{J. Behrndt} et al., Oper. Theory: Adv. Appl. 198, 61--85 (2010; Zbl 1192.47008) Full Text: arXiv
Behrndt, Jussi; Malamud, Mark M.; Neidhardt, Hagen Trace formulae for dissipative and coupled scattering systems. (English) Zbl 1175.47008 Behrndt, Jussi (ed.) et al., Spectral theory in inner product spaces and applications. Papers of the 6th workshop on operator theory in Krein spaces and operator polynomials, TU Berlin, Germany, December 14–17, 2006. Basel: Birkhäuser (ISBN 978-3-7643-8910-9/hbk). Operator Theory: Advances and Applications 188, 49-85 (2009). Reviewer: Dmitry Kaliuzhnyi-Verbovetskyi (Philadelphia) MSC: 47A40 47A55 47B44 PDFBibTeX XMLCite \textit{J. Behrndt} et al., Oper. Theory: Adv. Appl. 188, 49--85 (2009; Zbl 1175.47008) Full Text: DOI arXiv
Behrndt, Jussi; Malamud, Mark M.; Neidhardt, Hagen Scattering matrices and Weyl functions. (English) Zbl 1161.47008 Proc. Lond. Math. Soc. (3) 97, No. 3, 568-598 (2008). Reviewer: Dmitry Kaliuzhnyi-Verbovetskyi (Philadelphia) MSC: 47A40 47A55 47B25 34L25 34L40 PDFBibTeX XMLCite \textit{J. Behrndt} et al., Proc. Lond. Math. Soc. (3) 97, No. 3, 568--598 (2008; Zbl 1161.47008) Full Text: DOI arXiv
Behrndt, Jussi; Malamud, Mark M.; Neidhardt, Hagen Scattering theory for open quantum systems with finite rank coupling. (English) Zbl 1144.81480 Math. Phys. Anal. Geom. 10, No. 4, 313-358 (2007). MSC: 81S25 81U99 47A40 47A55 47B25 PDFBibTeX XMLCite \textit{J. Behrndt} et al., Math. Phys. Anal. Geom. 10, No. 4, 313--358 (2007; Zbl 1144.81480) Full Text: DOI
Behrndt, J.; Malamud, M. M.; Neidhardt, H. Scattering Theory for Open Quantum Systems. arXiv:math-ph/0610088 Preprint, arXiv:math-ph/0610088 [math-ph] (2006). MSC: 47A40 47A55 47B25 47B44 47E05 BibTeX Cite \textit{J. Behrndt} et al., ``Scattering Theory for Open Quantum Systems'', Preprint, arXiv:math-ph/0610088 [math-ph] (2006) Full Text: arXiv