Paolo Facchi
Professor
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Articles (20)
Stability of the gapless pure point spectrum of self-adjoint operators
We consider a self-adjoint operator T on a separable Hilbert space, with pure-point and simple spectrum with accumulations at finite points. Explicit conditions are stated on the eigenvalues of T and on the bounded perturbation V ensuring the global stability of the spectral nature of T + ɛV, ε∈R.
Year:
2024
Year:
2023
Collaborators (16)
Saverio Pascazio
Professor
University of Bari Aldo Moro
Davide Lonigro
Assistant professor (RTDa)
University of Bari Aldo Moro
Domenico Pomarico
University of Bari Aldo Moro
Giovanni Gramegna
Assistant Professor
University of Bari Aldo Moro
Robin Hillier
University of Lancaster
Giuseppe Marmo
-
Vincenzo Tamma
Academic, Professor, Professor of Physics and Quantum Technology
University of Portsmouth
Marilena Ligabò
-
Francesco Vincenzo Pepe
Assistant Professor (RTDB)
University of Bari Aldo Moro
Elisa Ercolessi
ALMA MATER STUDIORUM UNIVERSITY OF BOLOGNA
Kazuya Yuasa
Professor
Waseda University
Maria Maffei
Junior Assistant Professor
University of Bari Aldo Moro
Daniel Burgarth
Macquarie University
Sebastiano Stramaglia
University of Bari Aldo Moro
Cosmo Lupo
-
GIUSEPPE MAGNIFICO
Assistant Professor (RTDA)
-
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