Finite-temperature equation of state of polarized fermions at unitarity

Understand

We study in a nonperturbative fashion the thermodynamics of a unitary Fermi gas over a wide range of temperatures and spin polarizations.

• To this end, we use the complex Langevin method, a first principles approach for strongly coupled systems.
• Specifically, we show results for the density equation of state, the magnetization, and the magnetic susceptibility.
• At zero polarization, our results agree well with state-of-the art results for the density equation of state and with experimental data.