caa a22 4500 445867221 CHVBK 20180317145501.0 cr unu---uuuuu 170323e20111101xx s 000 0 eng 10.1140/epjd/e2010-10637-5 doi (NATIONALLICENCE)springer-10.1140/epjd/e2010-10637-5 Mazets I. Institute of Atomic and Subatomic Physics, Vienna University of Technology, 1020, Vienna, Austria aut Integrability breakdown in longitudinaly trapped, one-dimensional bosonic gases [Elektronische Daten] [I. Mazets] A system of identical bosons with short-range (contact) interactions is studied. Their motion is confined to one dimension by a tight lateral trapping potential and, additionally, subject to a weak harmonic confinement in the longitudinal direction. Finite delay time associated with penetration of quantum particles through each other in the course of a pairwise one-dimensional collision in the presence of the longitudinal potential makes the system non-integrable and, hence, provides a mechanism for relaxation to thermal equilibrium. To analyse this effect quantitatively in the limit of a non-degenerate gas, we develop a system of kinetic equations and solve it for small-amplitude monopole oscillations of the gas. The obtained damping rate is long enough to be neglected in a realistic cold-atom experiment, and therefore longitudinal trapping does not hinder integrable dynamics of atomic gases in the 1D regime. EDP Sciences, SIF, Springer-Verlag Berlin Heidelberg, 2011 The European Physical Journal D Springer-Verlag 65/1-2(2011-11-01), 43-47 1434-6060 65:1-2<43 2011 65 10053 https://doi.org/10.1140/epjd/e2010-10637-5 text/html Onlinezugriff via DOI 1 research-article jats NATIONALLICENCE 856 40 https://doi.org/10.1140/epjd/e2010-10637-5 text/html Onlinezugriff via DOI NATIONALLICENCE 100 1- Mazets I. Institute of Atomic and Subatomic Physics, Vienna University of Technology, 1020, Vienna, Austria aut NATIONALLICENCE 773 0- The European Physical Journal D Springer-Verlag 65/1-2(2011-11-01), 43-47 1434-6060 65:1-2<43 2011 65 10053 Metadata rights reserved Springer special CC-BY-NC licence nationallicence BK010053 XK010053 XK010000 NATIONALLICENCE NATIONALLICENCE NL-springer