In particular, we have found that even at the mean field level the naive vacuum saturation approximation is not a good approximation when we consider nonlocal four quark condensate.
这里我们需特别指出的是在计算非定域的四夸克凝聚时以往经常采用的朴素的真空饱和假定不再是一个好的近似。
In the mean field approximation, the steady state equation is given, and the linear stability analysis of the steady states is performed.
在平均场近似下给出了定态方程，分析了定态线性稳定性。
The improved method proposed in this paper is soft-hard thresholding denoising according to mean approximation.
提出的改进方法是利用均值逼近的软硬阈值折中法。
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