Journalartikel

Jahr der Veröffentlichung: 2021

Zeitschrift: The European Physical Journal A

Bandnummer: 57

Heftnummer: 4

ISSN: 1434-6001

eISSN: 1434-601X

Open Access Status: Hybrid

DOI Link: https://doi.org/10.1140/epja/s10050-021-00450-7

Verlag: Springer

Abstract: 
We update our previous results for (pseudo-)scalar mesons at zero temperature and finite quark chemical potential and generalize the investigation to include (axial-)vector mesons. We determine bound-state properties such as meson masses and decay constants up to chemical potentials far in the first-order coexistence region. To extract the bound-states properties, we solve the Bethe-Salpeter equation and utilize Landau-gauge quark and gluon propagators obtained from a coupled set of (truncated) Dyson-Schwinger equations with N-f = 2 + 1 dynamical quark flavors at finite chemical potential and vanishing temperature. For multiple (pseudo-)scalar and (axial-)vector mesons, we observe constant masses and decay constants for chemical potentials up to the coexistence region of the first-order phase transition thus verifying explicitly the Silver-Blaze property of QCD. Inside the coexistence region the pion becomes more massive and its decay constants decrease, whereas corresponding quantities for the (axial-)vector mesons remain (almost) constant.

Harvard-Zitierstil: Gunkel, P. and Fischer, C. (2021) Masses and decay constants of (axial-)vector mesons at finite chemical potential, The European Physical Journal A, 57(4), Article 147. https://doi.org/10.1140/epja/s10050-021-00450-7

APA-Zitierstil: Gunkel, P., & Fischer, C. (2021). Masses and decay constants of (axial-)vector mesons at finite chemical potential. The European Physical Journal A. 57(4), Article 147. https://doi.org/10.1140/epja/s10050-021-00450-7