Erratum : Superfluid density of states and pseudogap phenomenon in the BCS-BEC crossover regime of a superfluid Fermi gas [Phys.Rev.A 82,043630(2010)]
Erratum : Superfluid density of states and pseudogap phenomenon in the BCS-BEC crossover regime of a superfluid Fermi gas [Phys.Rev.A 82,043630(2010)]
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勘误表：超流体费米气体 BCS-BEC 交叉区域中的超流体态密度和赝能隙现象 [Phys.Rev.A 82,043630(2010)]
DOI：
10.1103/physreva.85.039908
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发表时间：
2012
影响因子：
2.9
通讯作者：
Yoji Ohashi
中科院分区：
文献类型：
--
作者：
Ryota Watanabe;Shunji Tsuchiya;Yoji Ohashi
在我们的论文中，由于处理非对角自能时的计算错误，超流体序参数的影响在交叉区域被低估。校正后的计算给出了更大的超流间隙ESF，因此图4（a）应该被下面所示的校正后的计算所取代。在弱耦合BCS体系和强耦合BEC体系中，状态密度ρ（ω）以及谱权重Ap（ω）几乎没有被这种校正改变，因为配对涨落在那里不太重要。另一方面，图 6 显示了酉体系中赝能隙和超流能隙之间的详细竞争，应该用这里提出的校正后的代替。在我们的论文中，我们报道了在赝能隙几乎消失后，超流体能隙在低于 0. 9Tc 时开始打开。然而，在正确的结果中，由于超流序的影响更加显着，在赝能隙完全消失之前，超流能隙开始在Tc以下发展，如图6所示。正如校正的图6所示，正如预期的那样，在远低于Tc时，获得了普通BCS型超流体态密度，如图6(a4)所示。
In our paper, the effects of the superfluid order parameter were underestimated in the crossover region due to a computational mistake in the treatment of the off-diagonal self-energy. The corrected calculation gives a larger superfluid gap ESF, so that Fig. 4 (a) should be replaced by the corrected one shown below.In the weak-coupling BCS regime and the strong-coupling BEC regime, the density of states ρ (ω), as well as the spectral weight Ap (ω), are almost unaltered by this correction, because pairing fluctuations are less important there. On the other hand, Fig. 6, which shows the detailed competition between the pseudogap and superfluid gap in the unitarity regime, should be replaced by the corrected one presented here. In our paper, we reported that the superfluid gap started to open below 0. 9Tc, after the pseudogap almost disappears. In the correct result, however, since effects of the superfluid order are more remarkable, the superfluid gap starts to develop below Tc, before the pseudogap disappears completely, as shown in the corrected Fig. 6. As expected, far below Tc, the ordinary BCS-type superfluid density of states is obtained, as shown in the corrected Fig. 6 (a4).