Speakers
Description
Although calculations of QCD thermodynamics from first-principle lattice simulations are limited to zero net-density due to the fermion sign problem, it is possible to extend the equation of state (EoS) to finite values of the $B$, $Q$, $S$ chemical potentials via expansions around zero chemical potentials. Taylor expansion around $μ_i = 0$ with $i = B, Q, S$ enables to cover with confidence the region up to $\frac{μ_i}{T} < 2.5$, and is usually limited at 450 MeV in any chemical potential. Thanks to a new method based on a T'-expansion scheme, it was however possible to extend the reach of the extrapolation in the $(T, μ_B)$ plane, up to a baryo-chemical potential around $\frac{μ_B}{T} = 3.5$. We present here a generalization of this scheme in which all three chemical potentials can be varied independently. We base our construction on continuum-estimated susceptibilities, obtained with the 4stout action on lattices with up to Nτ = 16, 20 and 24 time slices, depending on the quantity considered. As a result, we are able to offer a substantially larger coverage of the four dimensional QCD phase diagram compared to extrapolations based on the Taylor expansion.
| Category | Theory |
|---|---|
| Collaboration (if applicable) | MUSES |
