Reliable Equation of State for Composite Bosons in the 2D BCS-BEC Crossover

被引：0
|
作者：
L. Salasnich
机构：
[1] Universita di Padova,Dipartimento di Fisica e Astronomia “Galileo Galilei”
[2] Sezione di Sesto Fiorentino,INO
来源：
Journal of Superconductivity and Novel Magnetism | 2016年 / 29卷
关键词：
BCS-BEC crossover; Ultracold atoms; Dimensional regularization;
D O I：
暂无
中图分类号：
学科分类号：
摘要：
We briefly discuss recent experiments on the BCS-BEC crossover with ultracold alkali-metal atoms both in three-dimensional configurations and two-dimensional ones. Then we analyze the quantum-field-theory formalism used to describe an attractive D-dimensional Fermi gas taking into account Gaussian fluctuations. Finally, we apply this formalism to obtain a reliable equation of state of the 2D system at low temperaratures in the BEC regime of the crossover by performing a meaningful dimensional regularization of the divergent zero-point energy of collective bosonic excitations.
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页码：697 / 700
页数：3
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