Physics – Condensed Matter
Scientific paper
2001-12-05
Phys. Rev. E, v.65, 026605 (2002).
Physics
Condensed Matter
to be published in Phys. Rev. E (February, 2002)
Scientific paper
10.1103/PhysRevE.65.026605
Collision process between breather and moving kink-soliton is investigated both analytically and numerically in Fermi-Pasta-Ulam (FPU) chains. As it is shown by both analytical and numerical consideration low amplitude breathers and soft kinks retain their shapes after interaction. Low amplitude breather only changes the location after collision and remains static. As the numerical simulations show, the shift of its position is proportional to the stiffness of the kink-soliton, what is in accordance with the analytical predictions made in this paper. The numerical experiments are also carried out for large amplitude breathers and some interesting effects are observed: The odd parity large amplitude breather does not change position when colliding with widely separated soft kink-antikink pair, whilst in the case of closely placed kink-antikink pair the breather transforms into the moving one. Therefore it is suggested that the "harmless" objects similar to the kink-solitons in FPU chains could be used in order to displace or move the strongly localized structures in realistic physical systems. In particular, the analogies with quasi-one dimensional easy-plane type spin structures are discussed.
No associations
LandOfFree
Interaction of a Kink-Soliton with a Breather in a Fermi-Pasta-Ulam Chain does not yet have a rating. At this time, there are no reviews or comments for this scientific paper.
If you have personal experience with Interaction of a Kink-Soliton with a Breather in a Fermi-Pasta-Ulam Chain, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Interaction of a Kink-Soliton with a Breather in a Fermi-Pasta-Ulam Chain will most certainly appreciate the feedback.
Profile ID: LFWR-SCP-O-174145