Τίτλος:
Trapped bright matter-wave solitons in the presence of localized
inhomogeneities
Γλώσσες Τεκμηρίου:
Αγγλικά
Περίληψη:
We examine the dynamics of a bright solitary wave in the presence of a
repulsive or attractive localized “impurity” in Bose-Einstein
condensates (BECs). We study the generation and stability of a pair of
steady states in the vicinity of the impurity as the impurity strength
is varied. These two new steady states, one stable and one unstable,
disappear through a saddle-node bifurcation as the strength of the
impurity is decreased. Soliton dynamics is also studied, including cases
where the soliton is offset from one of the relevant fixed points. The
numerical results are corroborated by theoretical calculations which are
in very good agreement with the numerical findings. (c) 2005 Elsevier
B.V. All rights reserved.
Συγγραφείς:
Herring, G
Kevrekidis, PG
Carretero-Gonzalez, R
Malomed, BA
and Frantzeskakis, DJ
Bishop, AR
Περιοδικό:
MODERN PHYSICS LETTERS A
DOI:
10.1016/j.physleta.2005.07.008
