New results for QCD at non-vanishing chemical potentials from Taylor expansion
January 30, 2017
March 24, 2017
Recent results of the BNL-CCNU-Bielefeld collaboration
on the Taylor expansion of the pressure up to sixth order
in the baryon, strangeness and electric charge chemical potentials
are presented, with the focus on the QCD equation of state.
The calculations have been performed with the Highly Improved
Staggered Quark action on lattices with aspect ratio $4$ and temporal
extents ranging from $6$ to $16$, i.e. at four different values of
the lattice spacing.
The strange quark mass has been tuned to its physical value, and
two ratios of the light to the strange mass, $m_l/m_s = 1/20$
and $1/27$ have been investigated.
The comparison of sixth order Taylor expansion in the chemical potentials
with fourth order ones shows that the truncation errors are small at least
up to baryon chemical potential of $\mu_B/T \simeq 2$.
How to cite
Metadata are provided both in "article" format (very similar to INSPIRE) as this helps creating
very compact bibliographies which can be beneficial to authors and
readers, and in "proceeding" format
which is more detailed and complete.