Bayesian analysis of quark spectral properties from the Dyson-Schwinger equation
We report results on the quark spectral function in the Landau gauge at - finite temperature, determined from its Dyson-Schwinger equation. - Compared to earlier quenched results, this study encompasses unquenched - Nf=2 +1 fermion flavors in the medium. For the computation of - real-time spectra,...
Gespeichert in:
| Hauptverfasser: | , , , |
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| Dokumenttyp: | Article (Journal) |
| Sprache: | Englisch |
| Veröffentlicht: |
6 July 2018
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| In: |
Physical review
Year: 2018, Jahrgang: 98, Heft: 1 |
| ISSN: | 2470-0029 |
| DOI: | 10.1103/PhysRevD.98.014009 |
| Online-Zugang: | Verlag, lizenzpflichtig, Volltext: https://doi.org/10.1103/PhysRevD.98.014009 Verlag, lizenzpflichtig, Volltext: http://adsabs.harvard.edu/abs/2018PhRvD..98a4009F 
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| Verfasserangaben: | Christian S. Fischer, Jan M. Pawlowski, Alexander Rothkopf and Christian A. Welzbacher |
MARC
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| 520 | |a We report results on the quark spectral function in the Landau gauge at - finite temperature, determined from its Dyson-Schwinger equation. - Compared to earlier quenched results, this study encompasses unquenched - Nf=2 +1 fermion flavors in the medium. For the computation of - real-time spectra, we deploy the recent Bayesian Reconstruction (BR) - method and develop a new prior in order to better assess the inherent - systematic uncertainties. We identify the quark quasiparticle spectrum - and analyze the (non)appearance of zero modes at or around the - pseudocritical temperature. In both, the fully unquenched system and a - simpler truncation, using a model for the gluon propagator, we observe a - characteristic two-peak structure at zero three-momentum. The - temperature dependence of these structures, in case of the gluon - propagator model, is different than observed in previous studies. For - the back-coupled and unquenched case, we find interesting modifications - at and around the pseudocritical transition temperature. | ||
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