caa a22 4500 445366524 CHVBK 20180317142932.0 cr unu---uuuuu 170323e20111201xx s 000 0 eng 10.1007/s10909-011-0386-5 doi (NATIONALLICENCE)springer-10.1007/s10909-011-0386-5 Superfluidity of Flexible Chains of Polar Molecules [Elektronische Daten] [B. Capogrosso-Sansone, A. Kuklov] We study quantum chains formed in a gas of polar bosonic molecules confined in a stack of N identical one- and two-dimensional optical lattice layers, with molecular dipole moments aligned perpendicularly to the layers. Quantum Monte Carlo simulations of a single chain reveal its quantum roughening transition. The case of finite in-layer density of molecules is analyzed within the J-current model approximation, and it is found that N-layered molecular superfluid phase can undergo a quantum phase transition to a rough chain superfluid. A theorem is proven that no superfluidity of chains with length shorter than N is possible. The scheme for detecting the chain formation is proposed. Springer Science+Business Media, LLC, 2011 Dipolar interaction nationallicence Optical lattices nationallicence Polar molecules nationallicence Multilayers nationallicence Quantum phase transitions nationallicence Capogrosso-Sansone B. Institute for Theoretical Atomic, Molecular and Optical Physics, Harvard-Smithsonian Center of Astrophysics, 02138, Cambridge, MA, USA aut Kuklov A. Department of Engineering Science and Physics, CSI, CUNY, 10314, Staten Island, NY, USA aut Journal of Low Temperature Physics Springer US; http://www.springer-ny.com 165/5-6(2011-12-01), 213-226 0022-2291 165:5-6<213 2011 165 10909 https://doi.org/10.1007/s10909-011-0386-5 text/html Onlinezugriff via DOI 1 research-article jats NATIONALLICENCE 856 40 https://doi.org/10.1007/s10909-011-0386-5 text/html Onlinezugriff via DOI NATIONALLICENCE 700 1- Capogrosso-Sansone B. Institute for Theoretical Atomic, Molecular and Optical Physics, Harvard-Smithsonian Center of Astrophysics, 02138, Cambridge, MA, USA aut NATIONALLICENCE 700 1- Kuklov A. Department of Engineering Science and Physics, CSI, CUNY, 10314, Staten Island, NY, USA aut NATIONALLICENCE 773 0- Journal of Low Temperature Physics Springer US; http://www.springer-ny.com 165/5-6(2011-12-01), 213-226 0022-2291 165:5-6<213 2011 165 10909 Metadata rights reserved Springer special CC-BY-NC licence nationallicence BK010053 XK010053 XK010000 NATIONALLICENCE NATIONALLICENCE NL-springer