#### Filter Results:

- Full text PDF available (13)

#### Publication Year

2001

2017

- This year (4)
- Last 5 years (7)
- Last 10 years (12)

#### Publication Type

#### Co-author

#### Journals and Conferences

#### Key Phrases

Learn More

- A. Trombettoni, Augusto Smerzi
- Physical review letters
- 2001

We study the dynamical phase diagram of a dilute Bose-Einstein condensate (BEC) trapped in a periodic potential. The dynamics is governed by a discrete nonlinear Schrödinger equation: intrinsically localized excitations, including discrete solitons and breathers, can be created even if the BEC's interatomic potential is repulsive. Furthermore, we analyze… (More)

- Th Anker, Michael Albiez, +4 authors Markus K. Oberthaler
- Physical review letters
- 2005

We report the first experimental observation of nonlinear self-trapping of Bose-condensed 87Rb atoms in a one-dimensional waveguide with a superimposed deep periodic potential . The trapping effect is confirmed directly by imaging the atomic spatial distribution. Increasing the nonlinearity we move the system from the diffusive regime, characterized by an… (More)

In many physical applications solitons propagate on supports whose topological properties may induce new and interesting effects. In this paper, we investigate the propagation of solitons on chains with a topological inhomogeneity generated by inserting a finite discrete network on a chain. For networks connected by a link to a single site of the chain, we… (More)

- Raffaella Burioni, Davide Cassi, Pasquale Sodano, A. Trombettoni, Alessandro Vezzani
- Physical review. E, Statistical, nonlinear, and…
- 2006

We show that, by inserting suitable finite networks at a site of a chain, it is possible to realize filters and high-pass/low-pass devices for solitons propagating along the chain. The results are presented in the framework of coupled optical waveguides; possible applications to different contexts, such as photonic lattices and Bose-Einstein condensates in… (More)

- Francesco Saverio Cataliotti, Shane Burger, +5 authors Massimo Inguscio
- Science
- 2001

We report on the direct observation of an oscillating atomic current in a one-dimensional array of Josephson junctions realized with an atomic Bose-Einstein condensate. The array is created by a laser standing wave, with the condensates trapped in the valleys of the periodic potential and weakly coupled by the interwell barriers. The coherence of multiple… (More)

- Augusto Smerzi, A. Trombettoni
- Chaos
- 2003

The dynamics of a Bose-Einstein condensate trapped in a periodic potential is governed by a discrete nonlinear equation. The interplay/competition between discreteness (introduced by the lattice) and nonlinearity (due to the interatomic interaction) manifests itself on nontrivial dynamical regimes which disappear in the continuum (translationally invariant)… (More)

- Augusto Smerzi, A. Trombettoni, PG Kevrekidis, A. R. Bishop
- Physical review letters
- 2002

We predict a dynamical classical superfluid-insulator transition in a Bose-Einstein condensate trapped in an optical and a magnetic potential. In the tight-binding limit, this system realizes an array of weakly coupled condensates driven by an external harmonic field. For small displacements of the parabolic trap about the equilibrium position, the… (More)

- A. Trombettoni, Augusto Smerzi, A. R. Bishop
- Physical review. E, Statistical, nonlinear, and…
- 2003

We investigate the dynamical properties of the one-dimensional discrete nonlinear Schrödinger equation (DNLS) with periodic boundary conditions and with an arbitrary distribution of on-site defects. We study the propagation of a traveling plane wave with momentum k: the dynamics in Fourier space mainly involves two localized states with momenta +/-k… (More)