Spin-wave fluctuations in 2D Malthusian flocks can screen out activity, producing an equilibrium-XY phase separated from the active Malthusian phase by a BKT-like critical point.
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Large Spin-Wave Fluctuations Suppress Activity in Malthusian Flocks
Spin-wave fluctuations in 2D Malthusian flocks can screen out activity, producing an equilibrium-XY phase separated from the active Malthusian phase by a BKT-like critical point.