Lattice-based QCD equation of state at finite baryon density: Cluster Expansion Model
arXiv:1807.06472 · doi:10.1016/j.nuclphysa.2018.10.068
Abstract
The QCD equation of state at finite baryon density is studied in the framework of a Cluster Expansion Model (CEM), which is based on the fugacity expansion of the net baryon density. The CEM uses the two leading Fourier coefficients, obtained from lattice simulations at imaginary $μ_B$, as the only model input and permits a closed analytic form. Excellent description of the available lattice data at both $μ_B = 0$ and at imaginary $μ_B$ is obtained. We also demonstrate how the Fourier coefficients can be reconstructed from baryon number susceptibilities.
4 pages, 3 figures. Contribution to the Quark Matter 2018 conference proceedings