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33 papers · 2 filters
Josephson vortices in a long Josephson junction formed by phase twist in a polariton superfluid
Davide Caputo, Nataliya Bobrovska, Dario Ballarini +7
Quantum fluids of light are an emerging platform for energy efficient signal processing, ultra-sensitive interferometry and quantum simulators at elevated temperatures. Here we dem…
Landauer-Büttiker equation for bosonic carriers
Andrey R. Kolovsky, Zakari Denis, Sandro Wimberger
We study the current of Bose particles between two reservoirs connected by a one-dimensional channel. We analyze the problem from first principles by considering a microscopic mode…
Two-fluid theory for superfluid system with anisotropic effective masses
Yi-Cai Zhang, Chao-Fei Liu, Bao Xu +2
In this work, we generalize the two-fluid theory to a superfluid system with anisotropic effective masses along different principal axis directions. As a specific example, such a t…
High order exceptional points in ultracold Bose gases
Lei Pan, Shu Chen, Xiaoling Cui
We show that arbitrarily high-order exceptional points (EPs) can be achieved in a repulsively interacting two-species Bose gas in one dimension. By exactly solving the non-Hermitia…
Dynamical instability towards finite-momentum pairing in quenched BCS superconducting phases
Beibing Huang, Xiaosen Yang, Ning Xu +2
In this work we numerically investigate the fate of the Bardeen-Cooper-Schrieffer (BCS) pairing in the presence of quenched phase under Peierls substitution using time-dependent re…
Interplay of Solitons and Radiation in One-Dimensional Bose Gases
Yuan Miao, Enej Ilievski, Oleksandr Gamayun
We study relaxation dynamics in one-dimensional Bose gases, formulated as an initial value problem for the classical non-linear Schrödinger equation. We propose an analytic techniq…