(Almost) Everything is a Dicke model -- Mapping non-superradiant correlated light-matter systems to the exactly solvable Dicke model
arXiv:2402.15209 · doi:10.21468/SciPostPhysCore.7.3.038
Abstract
We investigate classes of interacting quantum spin systems in a single-mode cavity with a Dicke coupling, as a paradigmatic example of strongly correlated light-matter systems. Coming from the limit of weak light-matter couplings and large number of matter entities, we map the relevant low-energy sector of a broad class of models in the non-superradiant phases onto the exactly solvable Dicke model. We apply the outcomes to the Dicke-Ising model as a paradigmatic example, in agreement with results obtained by mean-field theory. We further accompany and verify our findings with finite-size calculations, using exact diagonalization and the series expansion method pcst++.
26 pages, 7 figures; Added proposed changes by the editors during SciPost review process
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- Quantum phase diagrams of Dicke-Ising models by a wormhole algorithm
- Digital-Analog Simulations of Schrödinger Cat States in the Dicke-Ising Model
- Compact cavity-dressed Hamiltonian framework at arbitrarily strong light-matter coupling
- Exactly Solvable Phase Transition in a Cavity-Coupled 1D Ising Chain