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Spinor Dynamics of Quantum Accelerator Modes near Higher Order Resonances

Autor: Rebuzzini, L., Guarneri, I., Artuso, R.

Publikováno v: Phys. Rev A 79, 033614 (2009).

Quantum Accelerator Modes were discovered in experiments with Kicked Cold Atoms in the presence of gravity. They were shown to be tightly related to resonances of the Quantum Kicked Rotor. In this paper a spinor formalism is developed for the analysi

Externí odkaz: http://arxiv.org/abs/0811.1156

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Quantum Accelerator Modes from the Farey Tree

Autor: Buchleitner, A., d'Arcy, M. B., Fishman, S., Gardiner, S. A., Guarneri, I., Ma, Z. -Y., Rebuzzini, L., Summy, G. S.

Publikováno v: Phys. Rev. Lett. 96, 164101 (2006)

We show that mode-locking finds a purely quantum non-dissipative counterpart in atom-optical quantum accelerator modes. These modes are formed by exposing cold atoms to periodic kicks in the direction of the gravitational field. They are anchored to

Externí odkaz: http://arxiv.org/abs/physics/0501146

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Distribution of resonance widths in localized tight-binding models

Autor: Terraneo, M., Guarneri, I.

Publikováno v: Eur. Phys. J. B 18, 303 (2000)

We numerically analyze the distribution of scattering resonance widths in one- and quasi-one dimensional tight binding models, in the localized regime. We detect and discuss an algebraic decay of the distribution, similar, though not identical, to re

Externí odkaz: http://arxiv.org/abs/cond-mat/0010424

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Chaos and Thermalization in a Dynamical Model of Two Interacting Particles

Autor: Borgonovi, F., Guarneri, I., Izrailev, F. M., Casati, G.

A quantum dynamical model of two interacting spins, with chaotic and regular components, is investigated using a finite two-particles symmetrized basis. Chaotic eigenstates give rise to an equilibrium occupation number distribution in close agreement

Externí odkaz: http://arxiv.org/abs/chao-dyn/9711005

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Quantum Ergodicity and Localization in Conservative Systems: the Wigner Band Random Matrix Model

Autor: Casati, G., Chirikov, B. V., Guarneri, I., Izrailev, F. M.

Publikováno v: Phys. Lett. A. 223 (1996) 430.

First theoretical and numerical results on the global structure of the energy shell, the Green function spectra and the eigenfunctions, both localized and ergodic, in a generic conservative quantum system are presented. In case of quantum localizatio

Externí odkaz: http://arxiv.org/abs/cond-mat/9607018

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Parametric Spectral Correlations of Disordered Systems in the Fourier Domain

Autor: Guarneri, I., Zyczkowski, K., Zakrzewski, J., Molinari, L., Casati, G.

Publikováno v: Phys. Rev. E52, 2220 (1995)

A Fourier analysis of parametric level dynamics for random matrices periodically depending on a phase is developed. We demonstrate both theoretically and numerically that under very general conditions the correlation $C(\varphi )$ of level velocities

Externí odkaz: http://arxiv.org/abs/chao-dyn/9501019

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Fractal Spectrum of a Quasi_periodically Driven Spin System

Autor: Guarneri, I., DiMeo, M.

We numerically perform a spectral analysis of a quasi-periodically driven spin 1/2 system, the spectrum of which is Singular Continuous. We compute fractal dimensions of spectral measures and discuss their connections with the time behaviour of vario

Externí odkaz: http://arxiv.org/abs/chao-dyn/9501013

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Results of the resistance of acetylated wood against marine borers at three Italian sites after five years of sea immersion

Autor: Palanti S., Stefani F., Andrenacci M., Faimali M., Guarneri I., Sigovini M., Tagliapietra D.

Publikováno v: IRG/WP 22-10994 The International Research Group on Wood Protection, pp. 1–6, Bled, Slovenia, 29 May-2 June, 2022
info:cnr-pdr/source/autori:Palanti S., Stefani F., Andrenacci M., Faimali M., Guarneri I., Sigovini M., Tagliapietra D./congresso_nome:IRG%2FWP 22-10994 The International Research Group on Wood Protection/congresso_luogo:Bled, Slovenia/congresso_data:29 May-2 June, 2022/anno:2022/pagina_da:1/pagina_a:6/intervallo_pagine:1–6

The aim of this research was the determination of resistance of acetylated wood against marine decay in use class 5 (EN 335) in temperate sea waters. The resistance of acetylated Pinus radiata (radiate pine) in solid and medium density fibreboard (MD

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=cnr_________::bdb23097353f0ba2b2f342ef0be94d35
http://www.cnr.it/prodotto/i/468770

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