Hadron thermodynamics from imaginary chemical potentials
We use 4stout improved staggered lattice data at imaginary chemical potentials to calculate virial coefficients in finite temperature QCD. Since the virial expansion is an expansion in the fugacity, i.e. the exponential of the chemical potential, for imaginary chemical potentials the coefficients simply become Fourier coefficients, allowing for an accurate determination from our simulations. We discuss the phenomenological interpretation of our results within the hadron resonance gas (HRG) model, and the hints they give us about the hadron spectrum. We also discuss features of the higher order coefficients that are not captured by the HRG.
Preferred track (if multiple tracks have been selected)
Nonzero Temperature and Density