TY  - JOUR
A1  - Sedrakian, Armen
A1  - Tripolt, Ralf-Arno
A1  - Wambach, Jochen
T1  - Color superconductivity from the chiral quark–meson model
T2  - Physics Letters B
N2  - 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 ,  2Δ0 where Δ0 is its on-shell value. We find Δ0 ≈ 40 MeV close to the chiral phase transition.
KW  - Models of QCD
KW  - Phase diagram of dense matter
KW  - Color superconductivity
Y1  - 2018
UR  - http://publikationen.ub.uni-frankfurt.de/frontdoor/index/index/docId/54677
UR  - https://nbn-resolving.org/urn:nbn:de:hebis:30:3-546779
SN  - 1873-2445
SN  - 0370-2693
VL  - 780.2018
SP  - 627
EP  - 630
PB  - Elsevier
CY  - Amsterdam [u.a.]
ER  -