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77 papers · 1 filter
Displacement power spectrum measurement of a macroscopic optomechanical system at thermal equilibrium
A. Di Virgilio, S. Bigotta, L. Barsotti +27
The mirror relative motion of a suspended Fabry-Perot cavity is studied in the frequency range 3-10 Hz. The experimental measurements presented in this paper, have been performed a…
Heisenberg model on a space with negative curvature: topological spin textures on the pseudosphere
L. R. A. Belo, N. M. Oliveira-Neto, W. A. Moura-Melo +2
Heisenberg-like spins lying on the pseudosphere (a 2-dimensional infinite space with constant negative curvature) cannot give rise to stable soliton solutions. Only fractional solu…
Nonlinear management of the angular momentum of soliton clusters
Andrea Fratalocchi, Armando Piccardi, Marco Peccianti +1
We demonstrate an original approach to acquire nonlinear control over the angular momentum of a cluster of solitary waves. Our model, derived from a general description of nonlinea…
Electronic screening and correlated superconductivity in carbon nanotubes
S. Bellucci, M. Cini, P. Onorato +1
A theoretical analysis of the superconductivity observed recently in Carbon nanotubes is proposed. We argue that ultra-small (diameter ) single wall carbon nanotubes…
Superconducting Microwave Cavity Made of Bulk MgB2
G. Giunchi, A. Agliolo Gallitto, G. Bonsignore +2
We report the successful manufacture and characterization of a microwave resonant cylindrical cavity made of bulk MgB2 superconductor (Tc = 38.5 K), which has been produced by the…
Entanglement-induced electron coherence in a mesoscopic ring with two magnetic impurities
F. Ciccarello, G. M. Palma, M. Zarcone
We investigate the Aharonov-Bohm (AB) interference pattern in the electron transmission through a mesoscopic ring in which two identical non-interacting magnetic impurities are emb…