Color superconductivity from the chiral quark–meson model
Color superconductivity from the chiral quark–meson model
复制标题
手性夸卡介子模型的彩色超导性
DOI:
10.1016/j.physletb.2018.03.056
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发表时间:
2018
影响因子:
4.4
通讯作者:
J. Wambach
中科院分区:
文献类型:
--
作者:
A. Sedrakian;R.-A. Tripolt;J. Wambach
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 2 Δ 0, where Δ 0 is its on-shell value. We find Δ 0≃ 40 MeV close to the chiral phase transition.
影响因子:
5
作者:
S. Sarkar;Rishi Sharma
通讯作者:
Rishi Sharma
影响因子:
8.6
作者:
M. Alford;Kamal Pangeni;Andreas Windisch
通讯作者:
Andreas Windisch
影响因子:
3.1
作者:
A. Sedrakian
通讯作者:
A. Sedrakian