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Non-Markovian Modeling of Nonequilibrium Fluctuations and Dissipation in Active Viscoelastic Biomatter



In our recent paper published in Physical Review Letters we have developed a model for viscoelastic active biomatter. This model incorporates the elastic coupling between a tracer bead and an active viscoelastic medium, yielding closed-form analytical predictions for the tracer autocorrelation and response function. We have demonstrated that these analytical predictions are in excellent agreement with experimental data for red blood cells (RBCs) and actomyosin networks.

Amir Abbasi, Roland R. Netz, Ali Naji – Phys. Rev. Lett. 131, 228202 – Published November 30, 2023 – DOI: 10.1103/PhysRevLett.131.228202

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  • actomyosin networks
  • adenosine triphosphate
  • Ali Naji
  • Amir Abbasi
  • autocorrelation
  • biomatter
  • blood cells
  • fluctuation-dissipation theorem
  • Hamiltonian
  • low-frequency violation
  • non-Markovian Langevin
  • nonequilibrium mechanical tracer response
  • RBC
  • Roland Netz
  • tracer particle
  • viscoelastic active biomatter