How Does a Dipolar Bose-Einstein Condensate Collapse?

TL;DR

This paper investigates the collapse mechanism of dipolar Bose-Einstein condensates, proposing that local density fluctuations trigger collapse rather than a global contraction, supported by experimental evidence.

Contribution

It introduces the idea that local density fluctuations, not global collapse, cause dipolar BEC collapse, supported by recent experimental data.

Findings

Collapse occurs via local density fluctuations

Supported by recent chromium condensate experiments

Global collapse to trap center is not the primary mechanism

Abstract

We emphasize that the macroscopic collapse of a dipolar Bose-Einstein condensate in a pancake-shaped trap occurs through local density fluctuations, rather than through a global collapse to the trap center. This hypothesis is supported by a recent experiment in a chromium condensate.