Sedrakian, Armen ; Tripolt, Ralf-Arno ; Wambach, Jochen (2022)
Color superconductivity from the chiral quark–meson model.
In: Physics Letters B, 2018, 780
doi: 10.26083/tuprints-00012802
Artikel, Zweitveröffentlichung, Verlagsversion
Kurzbeschreibung (Abstract)
We study the two-flavor color superconductivity of low-temperature quark matter in the vicinity of chiral phase transition in the quark–meson model where the interactions between quarks are generated by pion and sigma exchanges. Starting from the Nambu–Gorkov propagator in real-time formulation we obtain finite temperature (real axis) Eliashberg-type equations for the quark self-energies (gap functions) in terms of the in-medium spectral function of mesons. Exact numerical solutions of the coupled nonlinear integral equations for the real and imaginary parts of the gap function are obtained in the zero temperature limit using a model input spectral function. We find that these components of the gap display a complicated structure with the real part being strongly suppressed above 20, where 0 is its on-shell value. We find 0 40 MeV close to the chiral phase transition.
| Typ des Eintrags: | Artikel |
|---|---|
| Erschienen: | 2022 |
| Autor(en): | Sedrakian, Armen ; Tripolt, Ralf-Arno ; Wambach, Jochen |
| Art des Eintrags: | Zweitveröffentlichung |
| Titel: | Color superconductivity from the chiral quark–meson model |
| Sprache: | Englisch |
| Publikationsjahr: | 2022 |
| Publikationsdatum der Erstveröffentlichung: | 2018 |
| Verlag: | Elsevier |
| Titel der Zeitschrift, Zeitung oder Schriftenreihe: | Physics Letters B |
| Jahrgang/Volume einer Zeitschrift: | 780 |
| DOI: | 10.26083/tuprints-00012802 |
| URL / URN: | https://tuprints.ulb.tu-darmstadt.de/12802 |
| Zugehörige Links: | |
| Herkunft: | Zweitveröffentlichung |
| Kurzbeschreibung (Abstract): | We study the two-flavor color superconductivity of low-temperature quark matter in the vicinity of chiral phase transition in the quark–meson model where the interactions between quarks are generated by pion and sigma exchanges. Starting from the Nambu–Gorkov propagator in real-time formulation we obtain finite temperature (real axis) Eliashberg-type equations for the quark self-energies (gap functions) in terms of the in-medium spectral function of mesons. Exact numerical solutions of the coupled nonlinear integral equations for the real and imaginary parts of the gap function are obtained in the zero temperature limit using a model input spectral function. We find that these components of the gap display a complicated structure with the real part being strongly suppressed above 20, where 0 is its on-shell value. We find 0 40 MeV close to the chiral phase transition. |
| Status: | Verlagsversion |
| URN: | urn:nbn:de:tuda-tuprints-128021 |
| Zusätzliche Informationen: | Keywords: Models of QCD; Phase diagram of dense matter; Color superconductivity |
| Sachgruppe der Dewey Dezimalklassifikatin (DDC): | 500 Naturwissenschaften und Mathematik > 530 Physik |
| Fachbereich(e)/-gebiet(e): | 05 Fachbereich Physik 05 Fachbereich Physik > Institut für Kernphysik |
| Hinterlegungsdatum: | 11 Mär 2022 13:11 |
| Letzte Änderung: | 14 Mär 2022 08:29 |
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| Zugehörige Links: | |
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