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6 papers · 1 filter
Charged State of a Spherical Plasma in Vacuum
F. Cornolti, F. Ceccherini, S. Betti +1
The stationary state of a spherically symmetric plasma configuration is investigated in the limit of immobile ions and weak collisions. Configurations with small radii are positive…
Continuous variable tangle, monogamy inequality, and entanglement sharing in Gaussian states of continuous variable systems
Gerardo Adesso, Fabrizio Illuminati
For continuous-variable systems, we introduce a measure of entanglement, the continuous variable tangle ({\em contangle}), with the purpose of quantifying the distributed (shared)…
High Pressure X-ray Diffraction Study of MgMn2O4 Tetragonal Spinel
Lorenzo Malavasi, Cristina Tealdi, Monica Amboage +2
The phase stability of the MgMn2O4 spinel has been studied by means of high-pressure X-ray diffraction for pressures up to 30 GPa. Two samples with different inversion degrees have…
Casimir-Polder potentials as entanglement probe
Markus. A. Cirone, Giuseppe Compagno, G. Massimo Palma +2
We have considered the interaction of a pair of spatially separated two-level atoms with the electromagnetic field in its vacuum state and we have analyzed the amount of entangleme…
Analytical approach to soliton ratchets in asymmetric potentials
Niurka R. Quintero, Bernardo Sánchez-Rey, Mario Salerno
We use soliton perturbation theory and collective coordinate ansatz to investigate the mechanism of soliton ratchets in a driven and damped asymmetric double sine-Gordon equation.…
Landau-Zener Tunneling of Bose-Einstein Condensates in an Optical Lattice
V. V. Konotop, P. G. Kevrekidis, M. Salerno
A theory of the non-symmetric Landau-Zener tunneling of Bose-Einstein condensates in deep optical lattices is presented. It is shown that periodic exchange of matter between the ba…