79 citations · 1.2k across the 123 of their papers we have counts for
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1/N-expansion for the Dicke model and the decoherence program
Marco Frasca
An analysis of the Dicke model, N two-level atoms interacting with a single radiation mode, is done using the Holstein-Primakoff transformation. The main aim of the paper is to sho…
Dynamical decoherence in a cavity with a large number of two-level atoms
Marco Frasca
We consider a large number of two-level atoms interacting with the mode of a cavity in the rotating-wave approximation (Tavis-Cummings model). We apply the Holstein-Primakoff trans…
Saturation of dephasing time in mesoscopic devices produced by a ferromagnetic state
Marco Frasca
We consider an exchange model of itinerant electrons in a Heisenberg ferromagnet and we assume that the ferromagnet is in a fully polarized state. Using the Holstein-Primakoff tran…
Strong Coupling Perturbation Theory in Quantum Mechanics
Marco Frasca
We present a full introduction to the recent devised perturbation theory for strong coupling in quantum mechanics. In order to put the theory in a proper historical perspective, th…
Perturbative results on localization for a driven two-level system
Marco Frasca
Using perturbation theory in the strong coupling regime, that is, the dual Dyson series, and renormalization group techniques to re-sum secular terms, we obtain the perturbation se…