2026-07-072026-07-07http://salesiana.dossiersoluciones.com/handle/123456789/125379We propose that in the presence of an Ohmic, de-phasing type environment, a two-level-cavity system undergoes a quantum phase transition from a state with damped Rabi oscillation to a state without. We present the phase diagram and make predictions for pump and probe experiment. Such a strong coupling effect of the environment is beyond the reach of conventional perturbative treatment.4 pages, 2 figuresMaterials ScienceStrongly Correlated Electronstext