36 citations · 131 across the 11 of their papers we have counts for
9 papers · 1 filter
A Quantum Many-Body Instability in the Thermodynamic Limit
Marco Frasca
Intrinsic decoherence in the thermodynamic limit is shown for a large class of many-body quantum systems in the unitary evolution in NMR and cavity QED. The effect largely depends…
Stern-Gerlach Experiment and Bohm Limit
Marco Frasca
Stern-Gerlach experiment is a paradigm of measurement theory in quantum mechanics. Notwithstanding several analysis given in literature, no clear understanding of the apparent coll…
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…
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…
Does decoherence in the thermodynamic limit exist?
Marco Frasca
Paper withdrawn due to an error into the equations of the probability amplitudes.