Hydrodynamic correlation functions of chiral active fluids

Debarghya Banerjee, Anton Souslov, Vincenzo Vitelli

Research output: Contribution to journalArticle

1 Citation (SciVal)
28 Downloads (Pure)


The success of spectroscopy to characterize equilibrium fluids, for example the heat-capacity ratio, suggests a parallel approach for active fluids. Here, we start from a hydrodynamic description of chiral active fluids composed of spinning constituents and derive their low-frequency, long-wavelength response functions using the Kadanoff-Martin formalism. We find that the presence of odd (equivalently, Hall) viscosity leads to mixed density-vorticity response even at linear order. Such response, prohibited in time-reversal-invariant fluids, is a large-scale manifestation of the microscopic breaking of time-reversal symmetry. Our work suggests possible experimental probes that can measure anomalous transport coefficients in active fluids through dynamic light scattering.

Original languageEnglish
Article number043301
JournalPhysical Review Fluids
Issue number4
Early online date25 Apr 2022
Publication statusPublished - 30 Apr 2022

ASJC Scopus subject areas

  • Computational Mechanics
  • Modelling and Simulation
  • Fluid Flow and Transfer Processes


Dive into the research topics of 'Hydrodynamic correlation functions of chiral active fluids'. Together they form a unique fingerprint.

Cite this