Fluctuations and the axial anomaly with three quark flavors
The role of the axial anomaly in the chiral phase transition at finite temperature and quark chemical potential is investigated within a nonperturbative functional renormalization group approach. The flow equation for the grand potential is solved to leading order in a derivative expansion of a thre...
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| Hauptverfasser: | , |
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| Dokumenttyp: | Article (Journal) |
| Sprache: | Englisch |
| Veröffentlicht: |
24 March 2014
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| In: |
Physical review. D, Particles, fields, gravitation, and cosmology
Year: 2014, Jahrgang: 89, Heft: 5 |
| ISSN: | 1550-2368 |
| DOI: | 10.1103/PhysRevD.89.054027 |
| Online-Zugang: | Resolving-System, lizenzpflichtig, Volltext: https://doi.org/10.1103/PhysRevD.89.054027 Verlag, lizenzpflichtig, Volltext: https://link.aps.org/doi/10.1103/PhysRevD.89.054027 
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| Verfasserangaben: | Mario Mitter and Bernd-Jochen Schaefer |
| Zusammenfassung: | The role of the axial anomaly in the chiral phase transition at finite temperature and quark chemical potential is investigated within a nonperturbative functional renormalization group approach. The flow equation for the grand potential is solved to leading order in a derivative expansion of a three-flavor quark-meson model truncation. The results are compared with a standard and an extended mean-field analysis, which facilitates the exploration of the influence of bosonic and fermionic fluctuations, respectively, on the phase transition. The influence of U(1)A-symmetry breaking on the chiral transition, the location of a possible critical end point in the phase diagram and the quark mass sensitivity are studied in detail. |
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| Beschreibung: | Gesehen am 08.09.2020 |
| Beschreibung: | Online Resource |
| ISSN: | 1550-2368 |
| DOI: | 10.1103/PhysRevD.89.054027 |