Critical point of QCD at finite T and mu, lattice results for physical quark masses

By Zoltán Fodor, Sándor D. Katz. 2004

622 citations recorded by the source corpus.

A critical point (E) is expected in QCD on the temperature (T) versus baryonic chemical potential (μ) plane. Using a recently proposed lattice method for μ≠0 we study dynamical QCD with nf=2+1 staggered quarks of physical masses on Lt = 4 lattices. Our result for the critical point is TE = 162±2 MeV and μE = 360±40 MeV. For the critical temperature at μ = 0 we obtained Tc = 164±2 MeV. This work extends our previous study [8] by two means. It decreases the light quark masses (mu,d) by a factor of three down to their physical values. Furthermore, in order to approach the thermodynamical limit we increase our largest volume by a factor of three. As expected, decreasing mu,d decreased μE. Note, that the continuum extrapolation is still missing.

Subfields: Condensed Matter Physics, Nuclear and High Energy Physics

View Paper: https://www.semanticscholar.org/paper/2339c03720a662543e07a035de38bf348ab0f3ef

How researchers see this paper

The researchers whose trusted networks rank it highest, strongest advocate first. Every researcher gets a different order.

In Condensed Matter Physics

1. Kenji Fukushima
2. A. Adams
3. G. Mart'inez-Pinedo
4. P. Braun-Munzinger
5. Lincoln D. Carr
6. T. Schaefer
7. John E. Thomas
8. B. Schenke

In Nuclear and High Energy Physics

1. M. Hempel
2. Friedrich-Karl Thielemann
3. C. Fischer
4. V. Koch
5. P. Braun-Munzinger
6. J. Stachel
7. T. Schaefer
8. Tobias Fischer

Citations in the corpus

• Strongly correlated quantum fluids: ultracold quantum gases, quantum chromodynamic plasmas and holographic duality (2012, background): “A number of exploratory calculations have been performed [207, 208, 209, 210], but at this point it is not even clear whether the idea that the transition strengthens as the baryon chemical potential increases is correct [211].”
• CORE-COLLAPSE SUPERNOVA EXPLOSIONS TRIGGERED BY A QUARK–HADRON PHASE TRANSITION DURING THE EARLY POST-BOUNCE PHASE (2010, background): “Ab initio calculations show a smooth crossover from a hadronic phase to a deconfined quark gluon plasma phase, at high temperatures and low baryochemical potentials (see e.g. Fodor & Katz 2004; Aoki et al. 2006).”
• Collective Phenomena in the Non-Equilibrium Quark-Gluon Plasma (2008, background): “Over the past few years, increasingly precise lattice calculations of thermal QCD, extrapolated to the continuum and thermodynamic limits and to small quark masses, have become available [26, 27, 28, 29, 30, 31, 32, 33, 34].”