Please use this identifier to cite or link to this item: http://hdl.handle.net/2445/18733
Title: Confinement of discrete breathers in inhomogeneously profiled nonlinear chains
Author: Bena, Iona
Saxena, A. (Avadh)
Tsironis, G. T.
Ibañes Miguez, Marta
Sancho, José M.
Keywords: Física estadística
Termodinàmica
Sistemes dinàmics diferenciables
Dinàmica reticular
Statistical physics
Thermodynamics
Differentiable dynamical systems
Thermodynamics
Lattice dynamics
Issue Date: 2003
Publisher: The American Physical Society
Abstract: We investigate numerically the scattering of a moving discrete breather on a pair of junctions in a Fermi-Pasta-Ulam chain. These junctions delimit an extended region with different masses of the particles. We consider (i) a rectangular trap, (ii) a wedge shaped trap, and (iii) a smoothly varying convex or concave mass profile. All three cases lead to DB confinement, with the ease of trapping depending on the profile of the trap. We also study the collision and trapping of two DBs within the profile as a function of trap width, shape, and approach time at the two junctions. The latter controls whether one or both DBs are trapped.
Note: Reproducció del document publicat a: http://dx.doi.org/10.1103/PhysRevE.67.037601
It is part of: Physical Review E, 2003, vol. 67, núm. 3p. 037601(1)-037601(4)
URI: http://hdl.handle.net/2445/18733
ISSN: 1539-3755
Appears in Collections:Articles publicats en revistes (Física Quàntica i Astrofísica)

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