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arXiv 2106.08092cond-mat.quant-gas
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具有强两体损耗的一维玻色气体:谐波约束效应

The one-dimensional Bose gas with strong two-body losses: the effect of the harmonic confinement

Lorenzo Rosso, Alberto Biella, Leonardo Mazza

摘要:

本文研究了强两体损失下一维玻色气体的动力学。在这个耗散量子芝诺制度,气体费米子化和它的动力学可以用一组简单的速率方程来描述。采用局域密度近似和玻尔兹曼动力学方程,该描述很容易扩展到考虑外部潜力。我们表明,在没有限制的人口是在一个异常的方式耗尽,气体的行为作为一个低温的经典气体。谐波限制加速了气体的减少,并引入了一种新的衰变机制,我们彻底证实。

英文摘要:

We study the dynamics of a one-dimensional Bose gas in presence of strong two-body losses. In this dissipative quantum Zeno regime, the gas fermionises and its dynamics can be described with a simple set of rate equations. Employing the local density approximation and a Boltzmann-like dynamical equation, the description is easily extended to take into account an external potential. We show that in the absence of confinement the population is depleted in an anomalous way and that the gas behaves as a low-temperature classical gas. The harmonic confinement accelerates the depopulation of the gas and introduces a novel decay regime, which we thoroughly characterise.

机构、总结、中文摘要均由AI分析而来,可能存在错误,请以论文正文为准。

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