Speaker
Description
We present a new way of computing the pion screening mass at finite isoscalar chemical potential $\mu_\ell$, starting from the Taylor expansion of the screening correlator in $\mu_\ell$. The method derives from the known exact expression for the free theory pion screening correlator at finite $\mu_\ell$. As a first check of the formalism, we compare the lattice results for the free theory screening correlator and its derivatives, obtained on an $80^3\times8$ lattice with HISQ/tree fermions, with the corresponding theoretical expressions. We find good agreement, thus verifying our approach. We then apply our formalism to calculate the $\mathcal{O}(\mu_\ell^2)$ correction to the pion screening mass for two temperatures in the range 2 GeV $
| Topical area | QCD at Non-zero Density |
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