Active nematics are intrinsically phase separated.

摘要: Two-dimensional nonequilibrium nematic steady states, as found in agitated granular-rod monolayers or films of orientable amoeboid cells, were predicted [Europhys. Lett. 62, 196 (2003)] to have giant number fluctuations, with the standard deviation proportional mean. We show numerically that state such systems is macroscopically phase separated, yet dominated by Das-Barma model [Phys. Rev. 85, 1602 (2000)]. suggest experimental tests our findings granular and living-cell systems.