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@ARTICLE{Siminos:205673,
author = {Siminos, E. and Sánchez-Arriaga, G. and Saxena, V. and
Kourakis, I.},
title = {{M}odeling relativistic soliton interactions in overdense
plasmas: {A} perturbed nonlinear {S}chrödinger equation
framework},
journal = {Physical review / E},
volume = {90},
number = {6},
issn = {1539-3755},
address = {College Park, Md.},
publisher = {APS},
reportid = {PUBDB-2015-00233},
pages = {063104},
year = {2014},
note = {(c) American Physical Society},
abstract = {We investigate the dynamics of localized solutions of the
relativistic cold-fluid plasma model in the small but finite
amplitude limit, for slightly overcritical plasma density.
Adopting a multiple scale analysis, we derive a perturbed
nonlinear Schrödinger equation that describes the evolution
of the envelope of circularly polarized electromagnetic
field. Retaining terms up to fifth order in the small
perturbation parameter, we derive a self-consistent
framework for the description of the plasma response in the
presence of localized electromagnetic field. The formalism
is applied to standing electromagnetic soliton interactions
and the results are validated by simulations of the full
cold-fluid model. To lowest order, a cubic nonlinear
Schrödinger equation with a focusing nonlinearity is
recovered. Classical quasiparticle theory is used to obtain
analytical estimates for the collision time and minimum
distance of approach between solitons. For larger soliton
amplitudes the inclusion of the fifth-order terms is
essential for a qualitatively correct description of soliton
interactions. The defocusing quintic nonlinearity leads to
inelastic soliton collisions, while bound states of solitons
do not persist under perturbations in the initial phase or
amplitude.},
cin = {FS-CFEL-3},
ddc = {530},
cid = {I:(DE-H253)FS-CFEL-3-20120731},
pnm = {FS In-house research / theory (POF2-544)},
pid = {G:(DE-H253)POF2-(In-house)-20130405},
experiment = {EXP:(DE-MLZ)NOSPEC-20140101},
typ = {PUB:(DE-HGF)16},
UT = {WOS:000349306300007},
pubmed = {pmid:25615203},
doi = {10.1103/PhysRevE.90.063104},
url = {https://bib-pubdb1.desy.de/record/205673},
}