Thermodynamics in 8-Flavor QCD
Résumé
Motivated by the scenario of electroweak baryogenesis in the walking technicolor (WTC) model, we investigate thermodynamic properties of 8-flavor QCD by using Monte Carlo simulations in the lattice gauge theory framework. We adopt HISQ and tree-level Symanzik improved actions. We show that the chiral susceptibility has a peak structure, and that the ratio of chiral to pion susceptibilities starts showing an inflection point with decreasing fermion mass. These results suggest the existence of a chiral phase transition in 8-flavor QCD.
Mots clés
Lattice gauge theory
Conformal/Walking dynamics
Chiral and electroweak phase transitions
critical phenomena: chiral
susceptibility: chiral
electroweak interaction: critical phenomena
pi: susceptibility
fermion: mass
quantum chromodynamics
flavor
lattice field theory
tree approximation
thermodynamical
thermodynamics
baryogenesis
Monte Carlo
technicolor
conformal