Thermodynamics of interacting fermions in atomic traps
Thermodynamics of interacting fermions in atomic traps
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DOI：
10.1103/physrevlett.95.260405
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发表时间：
2005-12-31
影响因子：
8.6
通讯作者：
Levin, K
中科院分区：
文献类型：
--
作者：
Chen, QJ;Stajic, J;Levin, K
我们计算了在BCS和玻色-爱因斯坦凝聚端点之间的宽范围磁场下，被困的共振相互作用费米气体的熵随温度的变化。这为绝热扫描测温的重要技术提供了基础，并用于定量表征气体激发的演化和性质。然后，这些结果被用来校准Li-6和K-40的几个突破性实验中的温度。
We calculate the entropy in a trapped, resonantly interacting Fermi gas as a function of temperature for a wide range of magnetic fields between the BCS and Bose-Einstein condensation end points. This provides a basis for the important technique of adiabatic sweep thermometry and serves to characterize quantitatively the evolution and nature of the excitations of the gas. The results are then used to calibrate the temperature in several ground breaking experiments on Li-6 and K-40.