Speaker
Owe Philipsen
(Goethe-University Frankfurt)
Description
A three-dimensional effective lattice theory of Polyakov loops
can be construted by integrating over the spatial links in combined
strong coupling and hopping parameter expansions. The effective theory
is valid for sufficiently heavy quarks and coarse to intermediate lattice
spacings. In its domain of validity, the sign problem is weak enough to
enable simulations at finite baryon chemical potential and allows for
a description of the onset transition as well as
cold nuclear matter directly from
QCD. We summarize recent results and test the analytic effective couplings
against improved numerically determined versions. We also compare complex
Langevin and Monte Carlo simulations of the effective theory.
Primary author
Owe Philipsen
(Goethe-University Frankfurt)
