Landau theory applied to the ferromagnetic Dicke-Ising model captures a tricritical point between second- and first-order transitions driven by virtual nearest-neighbor double spin-flip processes, establishing the model as a platform for quantum criticality above the upper critical dimension.
quantum phase diagrams of dicke-ising models by a wormhole algorithm
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Quantum criticality of the ferromagnetic Dicke-Ising model
Landau theory applied to the ferromagnetic Dicke-Ising model captures a tricritical point between second- and first-order transitions driven by virtual nearest-neighbor double spin-flip processes, establishing the model as a platform for quantum criticality above the upper critical dimension.