Implications of hydrodynamic fluctuations on the minimum shear viscosity of the dilute Fermi gas at unitarity release_ykpmmulqenfq5bdm5cq5t5n5iq

Abstract

We confirm and expand on work by Chafin and Schaefer on hydrodynamic fluctuations in the unitary Fermi gas. Using the result for the equation of state from a recent MIT experiment, we derive lower bounds for η/n and η/s as a function of temperature. Re-analyzing recent quantum Monte Carlo data for the shear-viscosity spectral function we point out a possible resolution for the tension between the viscosity bound η/n> 0.3 from Chafin and Schaefer and the quantum Monte Carlo results η/n<0.2 from Wlazlowski et al. near the critical temperature
In text/plain format

Archived Files and Locations