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Green-Kubo relation in a mesoscale odd fluid model.

Yujing Ouyang1,2, Yuxing Jiao1,2, Fangfu Ye1,2

  • 1Beijing National Laboratory for Condensed Matter Physics and Laboratory of Soft Matter Physics, Institute of Physics, Chinese Academy of Sciences, Beijing 100190, China.

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Researchers validated the chiral stochastic rotation dynamics (CSRD) model for simulating odd fluids. The model accurately captures transport phenomena and microscopic fluctuations, confirming its physical foundation for future studies.

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Area of Science:

  • Statistical physics
  • Fluid dynamics
  • Computational physics

Background:

  • Fluids with broken time-reversal and parity symmetries exhibit unique odd transport phenomena.
  • Chiral stochastic rotation dynamics (CSRD) is a recent mesoscale model for efficient odd fluid simulation.

Purpose of the Study:

  • To verify the Green-Kubo relations for normal and odd transport coefficients within the CSRD model.
  • To confirm the CSRD model's capability in capturing statistical relationships in odd fluids.

Main Methods:

  • Simulation using the chiral stochastic rotation dynamics (CSRD) model.
  • Verification of Green-Kubo relations for transport coefficients.

Main Results:

  • The CSRD model correctly reproduces both normal and odd transport coefficients.
  • The model accurately reflects the statistical relationship between macroscopic transport and microscopic fluctuations.

Conclusions:

  • The physical foundation of the CSRD model is solidified.
  • The CSRD model is validated for studying statistical physics and nonequilibrium behavior of odd fluids.