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21 papers · 1 filter
W-algebras from symplectomorphisms
G. Bandelloni, S. Lazzarini
It is shown how -algebras emerge from very peculiar canonical transformations with respect to the canonical symplectic structure on a compact Riemann surface. The action of smoo…
Anomalous Tien-Gordon scaling in a 1d tunnel junction
Gianaurelio Cuniberti, Andrea Fechner, Maura Sassetti +1
We investigate the nonlinear ac transport through a quantum wire with an impurity in the presence of finite range electron-electron interactions. We discuss the influence of the sp…
Local fields in nonlinear quantum transport
Andrea Fechner, Gianaurelio Cuniberti, Maura Sassetti +1
We investigate the dynamical interplay between currents and electromagnetic fields in frequency-dependent transport through a single-channel quantum wire with an impurity potential…
Strong coupling theory for driven tunneling and vibrational relaxation
M. Thorwart, M. Grifoni, P. Hänggi
We investigate on a unified basis tunneling and vibrational relaxation in driven dissipative multistable systems described by their N lowest lying unperturbed levels. By use of the…
Tunneling driven tilt modes of the O octahedra in La{2-x}Sr{x}CuO{4}: strong dependence on doping
F. Cordero, R. Cantelli, M. Ferretti
The anelastic spectrum of La{2-x}Sr{x}CuO{4} (x = 0, 0.008, 0.019, 0.032) has been measured down to 1.5 K, in order to see the effect of doping on the intrinsic lattice fluctuation…
Different transport regimes in a spatially-extended recirculating background
P. Castiglione, R. Festa, A. Mazzino
Passive scalar transport in a spatially-extended background of roll convection is considered in the time-periodic regime. The latter arises due to the even oscillatory instability…