论文标题
$^3 $ HE超流量A-B过渡的路径依赖性过冷
Path-Dependent Supercooling of the $^3$He Superfluid A-B transition
论文作者
论文摘要
我们检查了不连续的一阶超流体$^3 $ a a a a a a t to b to t the the the the the the the the the the the the the the the the the Bointial Point（2.232 MK和21.22 Bar）。我们发现依赖路径的过渡：在固定压力下冷却在温度压力平面中产生明确定义的过渡线，但是该线可以通过在$ t _ {\ rm c} $下在较高压力下在几乎恒定的温度下降低来可靠地交叉。该路径依赖性与文献中的任何标准B期成核机制不一致。这种对称破坏过渡是早期宇宙中一阶转变的潜在模拟器。
We examine the discontinuous first-order superfluid $^3$He A to B transition in the vicinity of the polycritical point (2.232 mK and 21.22 bar). We find path-dependent transitions: cooling at fixed pressure yields a well defined transition line in the temperature-pressure plane, but this line can be reliably crossed by depressurizing at nearly constant temperature after transiting $T_{\rm c}$ at a higher pressure. This path dependence is not consistent with any of the standard B-phase nucleation mechanisms in the literature. This symmetry breaking transition is a potential simulator for first order transitions in the early universe.
