Interaction of dark solitons with localized impurities in Bose-Einstein condensates
نویسندگان
چکیده
Dimitri J. Frantzeskakis, G. Theocharis, F. K. Diakonos, Peter Schmelcher, and Yuri S. Kivshar Department of Physics, University of Athens, Panepistimiopolis, Zografos, Athens 15784, Greece Theoretische Chemie, Physikalisch-Chemisches Institut, INF 229, 69120 Heidelberg, Germany Nonlinear Physics Group, Research School of Physical Sciences and Engineering, Australian National University, Canberra ACT 0200, Australia ~Received 28 June 2002; published 12 November 2002!
منابع مشابه
Interaction of dark-bright solitons in two-component Bose-Einstein condensates
We study the interaction of dark-bright solitons in two component Bose-Einstein condensates by suitably tailoring the trap potential, atomic scattering length and atom gain or loss. We show that the coupled Gross-Pitaevskii (GP) equation can be mapped onto the Manakov model. An interesting class of matter wave solitons and their interaction are identified with time independent and periodically ...
متن کاملDark-bright solitons and vortices in Bose-Einstein condensates
DARK-BRIGHT SOLITONS AND VORTICES IN BOSE-EINSTEIN CONDENSATES MAY 2014 DONG YAN B.S., ZHEJIANG UNIVERSITY, CHINA M.S., UNIVERSITY OF MASSACHUSETTS AMHERST Ph.D., UNIVERSITY OF MASSACHUSETTS AMHERST Directed by: Professor Panayotis G. Kevrekidis This dissertation focuses on the properties of nonlinear waves in Bose-Einstein condensates (BECs). The fundamental model here is the nonlinear Schrödi...
متن کاملStability of dark solitons in three dimensional dipolar Bose-Einstein condensates.
The dynamical stability of dark solitons in dipolar Bose-Einstein condensates is studied. For standard short-range interacting condensates, dark solitons are unstable against transverse excitations in two and three dimensions. On the contrary, due to its nonlocal character, the dipolar interaction allows for stable 3D stationary dark solitons, opening a qualitatively novel scenario in nonlinear...
متن کاملObservation of attraction between dark solitons.
We demonstrate a dramatic change in the interaction forces between dark solitons in nonlocal nonlinear media. We present what we believe is the first experimental evidence of attraction of dark solitons. Our results indicate that attraction should be observable in other nonlocal systems, such as Bose-Einstein condensates with repulsive long-range interparticle interaction.
متن کاملFormation of fundamental structures in Bose-Einstein Condensates
The meanfield interaction in a Bose condensate provides a nonlinearity which can allow stable structures to exist in the meanfield wavefunction. We discuss a number of examples where condensates, modelled by the one dimensional Gross Pitaevskii equation, can produce gray solitons and we consider in detail the case of two identical condensates colliding in a harmonic trap. Solitons are shown to ...
متن کامل