Loss of superfluidity in a Bose-Einstein condensate via forced resonant oscillations

TL;DR

This paper predicts that resonant collective oscillations in a Bose-Einstein condensate can lead to the loss of superfluidity, driven by specific periodic modulations of the system's parameters, indicating a classical dynamical transition.

Contribution

It introduces a theoretical prediction of superfluidity loss in BECs caused by resonant oscillations induced by modulating scattering length or trapping potential.

Findings

Resonant oscillations can induce a transition to non-superfluid state.

Specific modulation frequencies trigger the loss of superfluidity.

A proposed experimental setup to observe this phenomenon.

Abstract

We predict the loss of superfluidity in a Bose-Einstein condensate in an axially symmetric harmonic trap alone during resonant collective oscillations via a classical dynamical transition. The forced resonant oscillation can be initiated by (a) a periodic modulation of the atomic scattering length with a frequency that equals twice the radial trapping frequency or multiples thereof, or by (b) a periodic modulation of the radial trapping potential with a frequency that equals the radial trapping frequency or multiples thereof. Suggestion for future experiment is made.