Phase structure of three and four flavor QCD
By C. Fischer, Jan Luecker, Christian A. Welzbacher. 2014
155 citations recorded by the source corpus.
We investigate the phase structure of QCD at finite temperature and light-quark chemical potential. We improve upon earlier results for N_f=2+1 dynamical quark flavors and investigate the effects of charm quarks in an extension to N_f=2+1+1. We determine the quark condensate and the Polyakov loop potential using solutions of a coupled set of (truncated) Dyson-Schwinger equations for the quark and gluon propagators of Landau gauge QCD. At zero chemical potential we find excellent agreement with results from lattice-QCD. With input fixed from physical observables we find only a very small influence of the charm quark on the resulting phase diagram at finite chemical potential. We discuss the location of the emerging critical end-point and compare with expectations from lattice gauge theory.
Subfields: Nuclear and High Energy Physics
View Paper: https://www.semanticscholar.org/paper/17f580bf6ad7efb2579ef08938ca405780383b29
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In Nuclear and High Energy Physics
- C. Fischer
- Markus Q. Huber
- Zoltán Fodor
- Sándor D. Katz
- Kálmán K. Szabó
- S. Borsányi
- A. Eichhorn
- C. Ratti
Citations in the corpus
- QCD at finite temperature and chemical potential from Dyson–Schwinger equations (2018, methodology): “In [229] these two sets of results have been compared directly, whereas in [36] an update of this comparison”
- The QCD phase diagram from analytic continuation (2015, methodology): “[37] and the freeze-out data of Refs.”
- The nonperturbative functional renormalization group and its applications (2020, background): “We also provide the two lines of μB/T = 2, 3 related to reliability bounds for both lattice, [954–956], and functional methods, [714, 801, 953, 957].”
- Nonperturbative properties of Yang–Mills theories (2018, methodology): “Besides the Brown-Pennington projector, also modifications of the integrands [176, 374, 415–419], modifications of the vertices [53], fitting the momentum [269, 380] or the cutoff dependence [183], or additional counterterms [24, 175, 188, 420, 421] were used.”