Molecular modelling of odd viscoelastic fluids*

In materials that break chiral symmetry, the stress response to applied strain can contain unusual coefficients dubbed odd viscosity (in fluids) or odd elasticity (in solids), both of which can be seen as special cases of a general phenomenon of odd viscoelasticity. In this talk, I will describe and analyze the first known microscopic model that produces an odd viscoelastic fluid. The model consists of a collection of dumbbells suspended in a fluid, with the beads of the dumbbells featuring an active driving system that exerts torque on the dumbbells. After coarse-graining the model we analytically calculate the odd viscoelastic coefficients and corroborate the findings using molecular dynamics simulations.