Towards the quark--gluon plasma Equation of State with dynamical strange and charm quarks

Abstract

We present an ongoing project aimed at determining the thermodynamic Equation of State (EoS) of quark--gluon matter from lattice QCD with two generations of dynamical quarks. We employ the Wilson twisted mass implementation for the fermionic fields and the improved Iwasaki gauge action. Relying on $T=0$ data obtained by the ETM Collaboration the strange and charm quark masses are fixed at their physical values, while the pion mass takes four values in the range from 470 MeV down to 210 MeV. The temperature is varied within a fixed--lattice scale approach. The values for the pseudocritical temperature are obtained from various observables. For the EoS we show preliminary results for the pure gluonic contribution obtained at the pion mass value 370 MeV, where we can compare with previously obtained results with $N_f=2$ degenerate light flavours.

4 pages, 2 figures; Contribution to the International Conference `Strangeness in Quark Matter 2015', Dubna, July 6 -- 11, 2015

References in corpus (5)

• The QCD equation of state with dynamical quarks
• Baryon spectrum with $N_f=2+1+1$ twisted mass fermions
• Numerical simulation of QCD with u, d, s and c quarks in the twisted-mass Wilson formulation
• The equation of state of quark-gluon matter from lattice QCD with two flavors of twisted-mass Wilson fermions
• Doping-dependent charge dynamics in CuxBi2Se3

Cited by in corpus (8)

• Chiral observables and topology in hot QCD with two families of quarks
• High-Temperature QCD: theory overview
• Localization of Dirac Fermions in Finite-Temperature Gauge Theory
• Frontiers of finite temperature lattice QCD
• Lattice QCD at nonzero temperature and density
• QCD Anderson transition with overlap valence quarks on a twisted-mass sea
• QCD propagators and vertices from lattice QCD (in memory of Michael Müller-Preußker)
• Transversal and longitudinal gluon spectral functions from twisted mass lattice QCD with $N_f=2+1+1$ flavors