The Friedrichs-Lee Model and Its Singular Coupling Limit

Lonigro D, Facchi P, Ligabò M (2019)

Publication Type: Conference contribution

Publication year: 2019

Publisher: MDPI

City/Town: Basel

DOI: 10.3390/proceedings2019012017

Abstract

Lee’s field-theoretical model describes the interaction between a qubit and a structured bosonic field. We study the mathematical properties of the Hamiltonian of the single-excitation sector of the theory, including a possibly “singular” qubit-field coupling (i.e., mediated by a non-square integrable form factor). This result allows for a rigorous description of qubit-field interactions in many physically interesting systems and may be extended to higher-excitation sectors of the theory.

Authors with CRIS profile

Davide Lonigro

Involved external institutions

University of Bari Aldo Moro / Università degli Studi di Bari Aldo Moro IT Italy (IT)

How to cite

APA:

Lonigro, D., Facchi, P., & Ligabò, M. (2019). The Friedrichs-Lee Model and Its Singular Coupling Limit. In Proceedings of the 11th Italian Quantum Information Science conference (IQIS2018). Basel: MDPI.

MLA:

Lonigro, Davide, Paolo Facchi, and Marilena Ligabò. "The Friedrichs-Lee Model and Its Singular Coupling Limit." Proceedings of the 11th Italian Quantum Information Science conference (IQIS2018) Basel: MDPI, 2019.

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