Sympathetic cooling of trapped fermions by bosons in the presence of particle losses
Sympathetic cooling of trapped fermions by bosons in the presence of particle losses
复制标题
在存在粒子损失的情况下玻色子对捕获的费米子的交感冷却
DOI：
10.1209/epl/i2005-10031-5
复制
发表时间：
2005
期刊：
影响因子：
--
通讯作者：
M. Lewenstein
中科院分区：
文献类型：
--
作者：
Zbigniew Idziaszek;Luis Santos;M. Lewenstein
在玻色-爱因斯坦凝聚的临界温度以下，我们研究了囚禁费米气体与理想玻色气体相互作用的共振冷却。我们推导了描述费米子组分动力学的量子主方程，并假定两种气体的热分布，解析地计算了费米子被玻色子原子冷却的速率。粒子损失是简并费米气体加热的重要来源。我们评估了损耗诱导加热的速率，并推导了费米子的最终温度的解析结果，该温度在存在粒子损耗的情况下是有限的。
We study the sympathetic cooling of a trapped Fermi gas interacting with an ideal Bose gas below the critical temperature of the Bose-Einstein condensation. We derive the quantum master equation, which describes the dynamics of the fermionic component, and postulating the thermal distribution for both gases we calculate analytically the rate at which fermions are cooled by the bosonic atoms. The particle losses constitute an important source of heating of the degenerate Fermi gas. We evaluate the rate of loss-induced heating and derive analytical results for the final temperature of fermions, which is limited in the presence of particle losses.