Zobrazeno 1 - 10
of 60
pro vyhledávání: '"Romero, F. R."'
Autor:
Álvarez, A., Cuevas, J., Romero, F. R., Hamner, C., Chang, J. J., Engels, P., Kevrekidis, P. G., Frantzeskakis, D. J.
Publikováno v:
J. Phys. B: At., Mol. Opt. Phys. 46 (2013) 065302
In this work, we study the collision of an atomic dark-bright soliton, in a two-component Bose-Einstein condensate, with a Gaussian barrier or well. First, we present the results of an experiment, illustrating the classical particle phenomenology (tr
Externí odkaz:
http://arxiv.org/abs/1210.6408
Publikováno v:
Physica D 240 (2011) 767-778
In the present work, we numerically explore the existence and stability properties of different types of configurations of dark-bright solitons, dark-bright soliton pairs and pairs of dark-bright and dark solitons in discrete settings, starting from
Externí odkaz:
http://arxiv.org/abs/1012.3976
Publikováno v:
J. Phys. A: Math. Theor. 44, 035102 (2011)
Non-time reversible phonobreathers are non-linear waves that can transport energy in coupled oscillator chains by means of a phase-torsion mechanism. In this paper, the stability properties of these structures have been considered. It has been perfor
Externí odkaz:
http://arxiv.org/abs/1011.5450
Publikováno v:
Physics Letters A 372, 8 (2008) 1256-1264
We study collision processes of moving breathers with the same frequency, traveling with opposite directions within a Klein-Gordon chain of oscillators. Two types of collisions have been analyzed: symmetric and non-symmetric, head-on collisions. For
Externí odkaz:
http://arxiv.org/abs/nlin/0703029
Autor:
Romero, F. R., Archilla, J. F. R., Palmero, F., Sanchez-Rey, B., Alvarez, A., Cuevas, J., Romero, J. M.
Publikováno v:
In SG Pandalai, editor, Recent Research Developments in Physics, vol 6, part II, pages 531-570. Transworld Research Network, Kerala, India, 2005. ISBN: 81-7895-171-1
Discrete breathers, or intrinsic localized modes, are spatially localized, time--periodic, nonlinear excitations that can exist and propagate in systems of coupled dynamical units. Recently, some experiments show the sighting of a form of discrete br
Externí odkaz:
http://arxiv.org/abs/nlin/0504021
Publikováno v:
Eur. Phys. J. B 51(1):119-130, May 2006
We study the dynamics of moving discrete breathers in an interfaced piecewise DNA molecule. This is a DNA chain in which all the base pairs are identical and there exists an interface such that the base pairs dipole moments at each side are oriented
Externí odkaz:
http://arxiv.org/abs/nlin/0503062
Publikováno v:
Nonlinearity 18: 769-790 (2005)
sing a theorem dubbed the {\em Multibreather Stabiliy Theorem} [Physica D 180 (2003) 235-255] we have obtained the stability properties of multibreathers in systems of coupled oscillators with on-site potentials, with an inhomogeneity. Analytical res
Externí odkaz:
http://arxiv.org/abs/nlin/0407009
Publikováno v:
Physica D 216 (2006) 115--120
In this paper a Frenkel--Kontorova model with a nonlinear interaction potential is used to describe a vacancy defect in a crystal. According to recent numerical results [Cuevas et al, Phys. Lett. A 315, 364 (2003)] the vacancy can migrate when it int
Externí odkaz:
http://arxiv.org/abs/nlin/0311002
Publikováno v:
New. Jou. Phys. 6:13.1-13.16, 2004.
Some recent results for a three--dimensional, semi--classical, tight--binding model for DNA show that there are two types of polarons, named radial and twist polarons, that can transport charge along the DNA molecule. However, the existence of two ty
Externí odkaz:
http://arxiv.org/abs/nlin/0307031
Publikováno v:
Localization and Energy Transfer in Nonlinear Systems, edited by L V\'azquez, MP Zorzano, RS Mackay (World Scientific, Singapore, 2003) pp. 256-259
We analyze the influence of an impurity in the evolution of moving discrete breathers in a Klein--Gordon chain with non-weak nonlinearity. Three different behaviours can be observed when moving breathers interact with the impurity: they pass through
Externí odkaz:
http://arxiv.org/abs/nlin/0306031