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7 papers · 1 filter
Phase diagram and momentum distribution of an interacting Bose gas in a bichromatic lattice
Xiaolong Deng, R. Citro, A. Minguzzi +1
We determine the phase diagram and the momentum distribution for a one-dimensional Bose gas with repulsive short range interactions in the presence of a two-color lattice potential…
Collective excitations of trapped one-dimensional dipolar quantum gases
P. Pedri, S. De Palo, E. Orignac +2
We calculate the excitation modes of a 1D dipolar quantum gas confined in a harmonic trap with frequency and predict how the frequency of the breathing n=2 mode characterizes…
Evidence of Luttinger liquid behavior in one-dimensional dipolar quantum gases
R. Citro, E. Orignac, S. De Palo +1
The ground state and structure of a one-dimensional Bose gas with dipolar repulsions is investigated at zero temperature by a combined Reptation Quantum Monte Carlo (RQMC) and boso…
Some aspects of electrical conduction in granular systems of various dimensions
Mathieu Creyssels, Stéphane Dorbolo, Alexandre Merlen +3
We report on measurements of the electrical conductivity in both a 2D triangular lattice of metallic beads and in a chain of beads. The voltage/current characteristics are qualitat…
Simulations of vibrated granular medium with impact velocity dependent restitution coefficient
Sean Mcnamara, Eric Falcon
We report numerical simulations of strongly vibrated granular materials designed to mimic recent experiments performed both in presence or absence of gravity. The coefficient of re…
Nonintegrable Schrodinger Discrete Breathers
J. Gomez-Gardenes, L. M. Floria, M. Peyrard +1
In an extensive numerical investigation of nonintegrable translational motion of discrete breathers in nonlinear Schrodinger lattices, we have used a regularized Newton algorithm t…