An RG treatment with self-energy corrections reproduces the known O(g^0) color-superconducting gap and claims to fix its overall coefficient, implying a factor-two reduction.
From the chromoelectric gluon self-energy (34), the tree-level amplitude in the electric sector is G0(q) = − cRg2 q2 0 − q2 − m2 D + i0+
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Renormalization group analysis of color superconductivity revisited
An RG treatment with self-energy corrections reproduces the known O(g^0) color-superconducting gap and claims to fix its overall coefficient, implying a factor-two reduction.