79 citations · 1.2k across the 123 of their papers we have counts for
6 papers · 2 filters
General Theorems on Decoherence in the Thermodynamic Limit
Marco Frasca
We extend the results on decoherence in the thermodynamic limit [M. Frasca, Phys. Lett. A {\bf 283}, 271 (2001)] to general Hamiltonians. It is shown that N independent particles,…
Does decoherence in the thermodynamic limit exist?
Marco Frasca
Paper withdrawn due to an error into the equations of the probability amplitudes.
Dynamical disappearance of superposition states in the thermodynamic limit
Marco Frasca
It is shown that a macroscopic superposition state of radiation, strongly interacting with an ensemble of two-level atoms, is removed generating a coherent state describing a class…
A modern review of the two-level approximation
Marco Frasca
The paradigm of the two-level atom is revisited and its perturbative analysis is discussed in view of the principle of duality in perturbation theory. The models we consider are a…
Ultraviolet analysis of one dimensional quantum systems
Marco Frasca
Starting from the study of one-dimensional potentials in quantum mechanics having a small distance behavior described by a harmonic oscillator, we extend this way of analysis to mo…
Classical states and decoherence by unitary evolution in the thermodynamic limit
Marco Frasca
It is shown how classical states, meant as states representing a classical object, can be produced in the thermodynamic limit, retaining the unitary evolution of quantum mechanics.…