We investigate the thermal instability of a Bose-Einstein condensate stirred by a rotating barrier in a ring-shaped trap. One would expect the critical angular speed to decrease with increasing temperature due to depletion of the condensate. However, we show that the critical velocity remains approximately constant within a considerable range of temperatures, contrary to expectation, and the thermal cloud has a stabilizing effect.

中文翻译：

---

量子旋转传感器的热稳定性

我们研究了由环形陷阱中的旋转势垒搅拌的玻色-爱因斯坦凝聚的热不稳定性。人们预计临界角速度会因冷凝物耗尽而随着温度升高而降低。然而，我们表明临界速度在相当大的温度范围内保持近似恒定，与预期相反，并且热云具有稳定作用。