Effect of dispersion forces on the dynamical evolution of the two-atom Dicke model in a broadband squeezed bath

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We show that the two-atom Dicke model, including dipole-dipole interaction (dispersion forces) and interaction with a broadband squeezed bath, exhibits a periodic modulation phenomenon in its population decay. For this purpose we have calculated explicitly the analytic expression for the time evolution of the density matrix elements under the intense field limit. The phase sensitive nature of the modulation phenomenon has been clearly brought out in these calculations.