caa a22 4500 445366060 CHVBK 20180317142930.0 cr unu---uuuuu 170323e20110301xx s 000 0 eng 10.1007/s10909-010-0316-y doi (NATIONALLICENCE)springer-10.1007/s10909-010-0316-y Bose Hubbard Model Confined in the Restricted Geometry [Elektronische Daten] [M. Tsukamoto, M. Tsubota] We investigated a Bose system confined in one-dimensional channel by using quantum Monte Carlo simulations. We observed temperature dependences of the superfluid density and two correlation functions along the tubal and the circumferential directions of the channel. As temperature is lowered, first the correlation develops along the circumference, and then it develops along the tubal and the Kosterlitz-Thouless (KT) phase appears at the temperature depending on the confining potential and the ratio of the circumferential length to the length of the channel. We found that the onset temperature of the superfluidity observed by a torsional oscillator measurement depends on the direction of the torsion in this system. Springer Science+Business Media, LLC, 2010 Superfluid nationallicence Restricted geometry nationallicence Quantum Monte Carlo nationallicence Tsukamoto M. Department of Physics, Osaka City University, Sumiyoshi-ku, 558-8585, Osaka, Japan aut Tsubota M. Department of Physics, Osaka City University, Sumiyoshi-ku, 558-8585, Osaka, Japan aut Journal of Low Temperature Physics Springer US; http://www.springer-ny.com 162/5-6(2011-03-01), 603-608 0022-2291 162:5-6<603 2011 162 10909 https://doi.org/10.1007/s10909-010-0316-y text/html Onlinezugriff via DOI 1 research-article jats NATIONALLICENCE 856 40 https://doi.org/10.1007/s10909-010-0316-y text/html Onlinezugriff via DOI NATIONALLICENCE 700 1- Tsukamoto M. Department of Physics, Osaka City University, Sumiyoshi-ku, 558-8585, Osaka, Japan aut NATIONALLICENCE 700 1- Tsubota M. Department of Physics, Osaka City University, Sumiyoshi-ku, 558-8585, Osaka, Japan aut NATIONALLICENCE 773 0- Journal of Low Temperature Physics Springer US; http://www.springer-ny.com 162/5-6(2011-03-01), 603-608 0022-2291 162:5-6<603 2011 162 10909 Metadata rights reserved Springer special CC-BY-NC licence nationallicence BK010053 XK010053 XK010000 NATIONALLICENCE NATIONALLICENCE NL-springer