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Color superconductivity from the chiral quark–meson model

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
Article, Secondary publication, Publisher's Version

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Item Type: Article
Type of entry: Secondary publication
Title: Color superconductivity from the chiral quark–meson model
Language: English
Date: 2022
Place of Publication: Darmstadt
Year of primary publication: 2018
Publisher: Elsevier
Journal or Publication Title: Physics Letters B
Volume of the journal: 780
DOI: 10.26083/tuprints-00012802
Corresponding Links:
Origin: Secondary publication

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: Publisher's Version
URN: urn:nbn:de:tuda-tuprints-128021
Additional Information:

Keywords: Models of QCD; Phase diagram of dense matter; Color superconductivity

Classification DDC: 500 Naturwissenschaften und Mathematik > 530 Physik
Divisions: 05 Department of Physics > Institute of Nuclear Physics
Date Deposited: 11 Mar 2022 13:11
Last Modified: 23 Feb 2023 07:02
URI: https://tuprints.ulb.tu-darmstadt.de/id/eprint/12802
PPN: 505222736
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