caa a22 4500 445867264 CHVBK 20180317145501.0 cr unu---uuuuu 170323e20111101xx s 000 0 eng 10.1140/epjd/e2011-20066-7 doi (NATIONALLICENCE)springer-10.1140/epjd/e2011-20066-7 Mean field effects on the scattered atoms in condensate collisions [Elektronische Daten] [P. Deuar, P. Ziń, J. Chwedeńczuk, M. Trippenbach] We consider the collision of two Bose Einstein condensates at supersonic velocities and focus on the halo of scattered atoms. This halo is the most important feature for experiments and is also an excellent testing ground for various theoretical approaches. In this study we find that the typical reduced Bogoliubov description, commonly used, is often not accurate in the region of parameters where experiments are performed. Surprisingly, besides the halo pair creation terms, one should take into account the evolving mean field of the remaining condensate and on-condensate pair creation. We present examples where the difference is clearly seen, and where the reduced description still holds. We also demostrate how to investigate separately the effects of various physical processes that influence the properties of the halo. EDP Sciences, SIF, Springer-Verlag Berlin Heidelberg, 2011 Deuar P. Institute of Physics, Polish Academy of Sciences, Al. Lotników 32/46, 02-668, Warsaw, Poland aut Ziń P. The Andrzej Sołtan Institute for Nuclear Studies, Hoża 69, 00-681, Warsaw, Poland aut Chwedeńczuk J. Institute of Theoretical Physics, Physics Department, University of Warsaw, Hoża 69, 00-681, Warsaw, Poland aut Trippenbach M. Institute of Theoretical Physics, Physics Department, University of Warsaw, Hoża 69, 00-681, Warsaw, Poland aut The European Physical Journal D Springer-Verlag 65/1-2(2011-11-01), 19-24 1434-6060 65:1-2<19 2011 65 10053 https://doi.org/10.1140/epjd/e2011-20066-7 text/html Onlinezugriff via DOI 1 research-article jats NATIONALLICENCE 856 40 https://doi.org/10.1140/epjd/e2011-20066-7 text/html Onlinezugriff via DOI NATIONALLICENCE 700 1- Deuar P. Institute of Physics, Polish Academy of Sciences, Al. Lotników 32/46, 02-668, Warsaw, Poland aut NATIONALLICENCE 700 1- Ziń P. The Andrzej Sołtan Institute for Nuclear Studies, Hoża 69, 00-681, Warsaw, Poland aut NATIONALLICENCE 700 1- Chwedeńczuk J. Institute of Theoretical Physics, Physics Department, University of Warsaw, Hoża 69, 00-681, Warsaw, Poland aut NATIONALLICENCE 700 1- Trippenbach M. Institute of Theoretical Physics, Physics Department, University of Warsaw, Hoża 69, 00-681, Warsaw, Poland aut NATIONALLICENCE 773 0- The European Physical Journal D Springer-Verlag 65/1-2(2011-11-01), 19-24 1434-6060 65:1-2<19 2011 65 10053 Metadata rights reserved Springer special CC-BY-NC licence nationallicence BK010053 XK010053 XK010000 NATIONALLICENCE NATIONALLICENCE NL-springer