Chen, LeimingLeimingChenLee, Chiu FanChiu FanLeeMaitra, AnanyoAnanyoMaitraToner, JohnJohnToner2023-12-222024-01Physical Review E: Statistical, Nonlinear, and Soft Matter Physics, 2024, 109 (1)1539-3755http://hdl.handle.net/10044/1/108366We analytically calculate the scaling exponents of a two-dimensional KPZ-like system: coherently moving incompressible polar active fluids. Using three different renormalization group approxima- tion schemes, we obtain values for the “roughness” exponent χ and anisotropy exponent ζ that are extremely near the known exact results. This implies our prediction for the previously completely unknown dynamic exponent z is likely to be quantitatively accurate.©2024 American Physical Society. Chen, Leiming, et al. "Dynamics of packed swarms: Time-displaced correlators of two-dimensional incompressible flocks." Physical Review E 109.1 (2024): L012601.Journal Articlehttps://www.dx.doi.org/10.1103/PhysRevE.109.L012601https://journals.aps.org/pre/abstract/10.1103/PhysRevE.109.L012601