ar X iv : h ep - p h / 03 03 23 0 v 3 10 S ep 2 00 3 Color superconductor with a color - sextet condensate

نویسنده

  • Rudolf Sýkora
چکیده

We analyze color superconductivity of one massive flavor quark matter at moderate baryon density with a spin-zero color-sextet condensate. The most general Higgs-type ground-state expectation value of the order parameter implies complete breakdown of the SU(3) × U(1) symmetry. However, both the conventional fourth-order polynomial effective bosonic description, and the NJL-type fermionic description in the mean-field approximation favor an enhanced SO(3) symmetry of the ground state. We ascribe this finding to the failure of the mean-field approximation and propose that a more sophisticated technique is needed.

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تاریخ انتشار 2005