Entropy production in active turbulence*

Active particles like bacteria and sperm cells sustain continuous intake and dissipation of energy. Consequently, they are intrinsically out of equilibrium and lead to a non-vanishing entropy production rate (EPR) even in steady states. Quantifying how EPR varies in different collective phases is crucial in developing a thermodynamic framework for the active matter. In this work, we look at EPR in active turbulence. We use Active Model H, a continuum model used representing active particles in a momentum-conserving fluid, to study turbulence in scalar active systems. We measure the local EPR in numerical simulations, which unveils the role of noise amplitude and activity on EPR in active turbulent system.