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13 papers · 1 filter
Spin bath interactions effects on the geometric phase
Paula I. Villar
We calculate the geometric phase of a spin-1/2 particle coupled to an external environment comprising N spin-1/2 particle in the framework of open quantum systems. We analyze the d…
Identical particles are indistinguishable but..
Alberto C. de la Torre, Hector O. Martin
It is shown that quantum systems of identical particles can be treated as if they were different when they are in well differentiated states. This simplifying assumption allows the…
Environmentally induced corrections to the geometric phase in a two-level system
Fernando C. Lombardo, Paula I. Villar
We calculate the geometric phase for different open systems (spin-boson and spin-spin models). We study not only how they are corrected by the presence of the different type of env…
Exploring the quantum vacuum with cylinders
F. C. Lombardo, F. D. Mazzitelli, P. I. Villar
We review recent work on the Casimir interaction energy between cylindrical shells. We include proposals for future experiments involving cylinders, such us a null experiment using…
Noise-induced energy excitation by a general environment
Fernando C. Lombardo, Paula I. Villar
We analyze the effects that general environments, namely ohmic and non-ohmic, at zero and high temperature induce over a quantum Brownian particle. We state that the evolution of t…
Decoherence in a Two Slit Diffraction Experiment with Massive Particles
Paula I. Villar, Fernando C. Lombardo
Matter-wave interferometry has been largely studied in the last few years. Usually, the main problem in the analysis of the diffraction experiments is to establish the causes for t…