标题： 非平衡态相变在活性收缩极性纤维中 显示英文标题

标题： Nonequilibrium phase transitions in active contractile polar filaments

摘要： 我们研究在二维基底上一组活性收缩极性纤维的图案和涨落，使用连续描述，在无热噪声的情况下，由活性温度$T_A$参数化。 稳态通常由指向内部的星形结构组成，并显示出从移动星形街道到静止星形晶格的连续相变。 与平衡对应物不同，这种活性晶体在低$T_A$时表现出真正的长程有序。 随着$T_A$的增加，星形结构重塑，寿命分布发生变化；同时我们发现由极性和键向序所表征的新相变。 显示英文摘要

摘要： We study the patterning and fluctuations of a collection of active contractile polar filaments on a two dimensional substrate, using a continuum description in the presence of athermal noise, parameterised by an active temperature $T_A$. The steady states generically consist of arrays of inward pointing asters and show a continuous transition from a moving aster street to a stationary aster lattice. In contrast to its equilibrium counterpart, this active crystal shows true long range order at low $T_A$. On increasing $T_A$, the asters remodel with a distribution of lifetimes; concomitantly we find novel phase transitions characterised by polar and bond-orientational order.