Only the immortal can (almost) flock while turning: Two-dimensional chiral immortal flocks, time crystals and non-universal sub-logarithmic roughness

Sudip Mukherjee, Abhik Basu, Leiming Chen +1

We study two-dimensional chiral ``dry'' (non-momentum conserving) ``immortal'' (number conserving) ``flocks'' (polar ordered active fluids). Noise driven fluctuations about the noi…