Dynamic structure factor and drag force in a one-dimensional strongly-interacting Bose gas at finite temperature
arXiv:1503.08038 · doi:10.1103/PhysRevA.91.063619
Abstract
We study the effect of thermal and quantum fluctuations on the dynamical response of a one-dimensional strongly-interacting Bose gas in a tight atomic waveguide. We combine the Luttinger liquid theory at arbitrary interactions and the exact Bose-Fermi mapping in the Tonks-Girardeau-impenetrable-boson limit to obtain the dynamic structure factor of the strongly-interacting fluid at finite temperature. Then, we determine the drag force felt by a potential barrier moving along the fluid in the experimentally realistic situation of finite barrier width and temperature.
13 pages, 11 figures
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