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High Energy Physics - Phenomenology

arXiv:1610.08748 (hep-ph)
[Submitted on 27 Oct 2016 (v1), last revised 28 Jun 2017 (this version, v2)]

Title:Fluctuation-induced modifications of the phase structure in (2+1)-flavor QCD

Authors:Fabian Rennecke, Bernd-Jochen Schaefer
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Abstract:The low-energy sector of QCD with $N_f = 2\!+\!1$ dynamical quark flavors at non-vanishing chemical potential and temperature is studied with a non-perturbative functional renormalization group method. The analysis is performed in different truncations in order to explore fluctuation-induced modifications of the quark-meson correlations as well as quark and meson propagators on the chiral phase transition of QCD. Depending on the chosen truncation significant quantitative implications on the phase transition are found. In the chirally symmetric phase, the quark flavor composition of the pseudoscalar $(\eta,\eta^{\prime})$-meson complex turns out to be drastically sensitive to fluctuation-induced modifications in the presence of the axial $U(1)_A$ anomaly. This has important phenomenological consequences for the assignment of chiral partners to these mesons.
Comments: 21 pages, 9 figures; v2: published version
Subjects: High Energy Physics - Phenomenology (hep-ph); High Energy Physics - Theory (hep-th); Nuclear Theory (nucl-th)
Cite as: arXiv:1610.08748 [hep-ph]
  (or arXiv:1610.08748v2 [hep-ph] for this version)
  https://doi.org/10.48550/arXiv.1610.08748
Journal reference: Phys. Rev. D 96, 016009 (2017)
Related DOI: https://doi.org/10.1103/PhysRevD.96.016009

Submission history

From: Fabian Rennecke [view email]
[v1] Thu, 27 Oct 2016 12:31:16 UTC (1,472 KB)
[v2] Wed, 28 Jun 2017 09:41:59 UTC (1,474 KB)
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