论文标题
Ginzburg-Landau理论在BCS-BEC交叉中的可靠性，包括3D吸引人的高斯波动
Reliability of the Ginzburg-Landau Theory in the BCS-BEC Crossover by Including Gaussian Fluctuations for 3D Attractive Fermions
论文作者
论文摘要
我们计算了在超流体临界温度周围的三维有吸引力的费米气体的Ginzburg-Landau（GL）方程的参数。我们将整个Bardeen-Cooper-Schrieffer（BCS）与Bose-Einstein冷凝物（BEC）制度进行比较。我们表明，加斯波动的包含很大程度上改变了接近跨界车辆的BEC状态的金茨堡 - 陆地参数的值。我们研究了Ginzburg-Landau理论的可靠性，并随着波动的波动，研究了整个BCS-BEC交叉的相干长度和关键旋转频率的行为。高斯波动的效果从BCS制度到BCS-BEC交叉的单一限制提供了定性的正确趋势。在接近BEC政权时，Ginzburg-Landau方程式与高斯波动的融合在一起是不可靠的。
We calculate the parameters of the Ginzburg-Landau (GL) equation of a three-dimensional attractive Fermi gas around the superfluid critical temperature. We compare different levels of approximation throughout the Bardeen-Cooper-Schrieffer (BCS) to the Bose-Einstein Condensate (BEC) regime. We show that the inclusion of Gaussian fluctuations strongly modifies the values of the Ginzburg-Landau parameters approaching the BEC regime of the crossover. We investigate the reliability of the Ginzburg-Landau theory, with fluctuations, studying the behavior of the coherence length and of the critical rotational frequencies throughout the BCS-BEC crossover. The effect of the Gaussian fluctuations gives qualitative correct trends of the considered physical quantities from the BCS regime up to the unitary limit of the BCS-BEC crossover. Approaching the BEC regime, the Ginzburg-Landau equation with the inclusion of Gaussian fluctuations turns out to be unreliable.
