科研之友
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摘要
Based on the rainbow approximation of Dyson-Schwinger equation and the assumption that the full inverse quark propagator at finite chemical potential is analytic in the neighborhood of mu = 0, it is proved that the dressed quark propagator at finite chemical potential mu can be written as go G0(-1)[mu] = i gamma (.) pA(p(similar to 2)) + B (p(similar to 2)) with p(mu), = ((p) over right arrow, P-4 + i mu) From the dressed quark propagator at finite chemical potential in Munczek model the bag constant of a baryon and the scalar quark condensate are evaluated. A comparison with previous results is given.
