Volume 518 - The 42nd International Symposium on Lattice Field Theory (LATTICE2025) - Parallel Session QCD at nonzero temperature and density
Spatial string tension at high temperatures and quantitative tests of dimensionally reduced effective theories
V. Rao*, P. Petreczky and P. Hegde
*: corresponding author
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Pre-published on: July 15, 2026
Published on: —
Abstract
We calculate the spatial string tension in 2+1 flavour QCD in $(3{+}1)$
dimensions within a temperature range of $[166\,\mathrm{MeV},\,1000\,\mathrm{MeV}]$
using spatial Wilson loops with HYP smearing.
We use the Highly Improved Staggered Quark action for fermions and the
tree-level Symanzik improved gauge action for gluons at two lattice
spacings corresponding to temporal extents $N_\tau = 8$ and $10$.
We then compare our results with dimensionally reduced effective theories
at high temperatures (EQCD and MQCD) to test the onset of dimensional
reduction in QCD.
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