过冷液体仲氢超流性的研究
Search for superfluidity in supercooled liquid parahydrogen
摘要：
用量子蒙特卡罗模拟研究了过冷液体仲氢可能的超流相变。这里采用的冷却方案允许研究低至温度T=0.25 K的流体相。没有发现超流性的证据，因为即使在最低温度下，相同粒子的交换也被强烈抑制。结果表明，与普遍持有的信念相反，它不是成对相互作用的深度，而是其相对较大的硬核直径，物理上阻碍了仲氢超流性。
英文摘要：
The possible superfluid transition of supercooled liquid parahydrogen is investigated by quantum Monte Carlo simulations. The cooling protocol adopted here allows for the investigation of a fluid phase down to a temperature T=0.25 K. No evidence of superfluidity is found, as exchanges of identical particles are strongly suppressed even at the lowest temperature. Is shown that, contrary to a commonly held belief, it is not the well depth of the pair-wise interaction but rather its relatively large hard core diameter that physically hinders superfluidity in parahydrogen.
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