Jaynes-Cummings dynamics in strong coupling for many-interacting-qubit quantum Rabi models

Quantum Physics [Submitted on 22 Apr 2026] Jaynes-Cummings dynamics in strong coupling for many-interacting-qubit quantum Rabi models Roberto Grimaudo, Sagnik Chakraborty, Rosario Lo Franco, Giuseppe Falci The present work focuses on the strong/weak interaction of many-body spin-systems with a cavity mode. It introduces the necessity of redefining the physical conditions determining the strong/weak coupling regime in those systems. In more complex systems, the effective coupling emerging from the collective dynamics may differ indeed from the actual coupling of each individual subsystem with the bosonic field. This is shown by highlighting some counter-intuitive dynamical effects properly related to the coupling regime: a Jaynes-Cummings dynamics emerging although a strong interaction is present. The universality of this result is demonstrated through the analysis of three distinct systems: a two-qubit, a two-qutrit, and an N-qubit chain quantum Rabi models. Subjects: Quantum Physics (quant-ph) Cite as: arXiv:2604.20363 [quant-ph]   (or arXiv:2604.20363v1 [quant-ph] for this version)   https://doi.org/10.48550/arXiv.2604.20363 Focus to learn more Submission history From: Roberto Grimaudo [view email] [v1] Wed, 22 Apr 2026 09:01:30 UTC (412 KB) Access Paper: HTML (experimental) view license Current browse context: quant-ph < prev   |   next > new | recent | 2026-04 References & Citations INSPIRE HEP NASA ADS Google Scholar Semantic Scholar Export BibTeX Citation Bookmark Bibliographic Tools Bibliographic and Citation Tools Bibliographic Explorer Toggle Bibliographic Explorer (What is the Explorer?) Connected Papers Toggle Connected Papers (What is Connected Papers?) Litmaps Toggle Litmaps (What is Litmaps?) scite.ai Toggle scite Smart Citations (What are Smart Citations?) Code, Data, Media Demos Related Papers About arXivLabs Which authors of this paper are endorsers? | Disable MathJax (What is MathJax?)