Supercurrent Stability in a Quasi-1D Weakly Interacting Bose Gas

TL;DR

This paper explores the potential for observing superfluid behavior in a quasi-one-dimensional weakly interacting Bose gas at finite temperatures, highlighting conditions under which supercurrents remain stable over experimental timescales.

Contribution

It demonstrates that weak interactions and 1D properties can enable supercurrent stability, making the system behave like a true superfluid despite finite temperature effects.

Findings

Supercurrent relaxational time exceeds experimental observation time.

Weak interactions in 1D gases can mimic superfluid behavior.

Finite temperature effects do not necessarily destroy superfluidity.

Abstract

We discuss a possibility of observing superfluid phenomena in a quasi-1D weakly interacting Bose gas at finite temperatures. The weakness of interaction in combination with generic properties of 1D liquids can result in a situation when relaxational time of supercurrent is essentially larger than the time of experimental observation, and the behavior of the system is indistinguishable from that of a genuine superfluid.