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Indagine sul contrasto allo sfruttamento lavorativo e di manodopera immigrata in Italia: dalla direttiva europea. Sanzioni alla legge di Rosarno.
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Kink Size Dependent Bound States In Modified Sine Gordon Models
No full textDespite the enormous variety of quasi one-dimensional problems in which solitons seem to
play a crucial role, only few well-known potentials (sine~ Gordon, double-sine-Gordon, and
higher-order polynomial rnodels) have been used for modelling physical systems. It appears then relevant to look for a wider class of potentials useful to describe nonlinear excitations in real materials. ..
A Note on the Internal Zero Modes Of Solitons
No full textFor a quantum field theory with soliton behavior the zero-frequency modes, associated with internal-symmetry breaking, do not require additional collective quantum coordinates or Goldstone bosons, provided the soliton solution satisfies a suitable boundary condition
Spatially Inhomogeneous Superconducting and Bosonic Networks With Emergent Complex Behaviors
No full textThe spontaneous emergence of enhanced responses and local orders are properties often associated with complex matter where nonlinearities and spatial inhomogeneities dominate. We discuss these phenomena in quantum devices realized with superconducting Josephson junction networks and cold atoms in optical lattices. We evidence how the pertinent engineering of the network's shape induces the enhancement of the zero-voltage Josephson critical currents in superconducting arrays as well as the emergence of spatially localized condensates for cold atoms in inhomogeneous optical lattices
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