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Fermion asymmetry of the universe and W condensate

The possibility that a uniform condensate of W bosons appears in quark-lepton matter is examined in the framework of various field-theoretic models. For the Weinberg-Salam model it is shown that if the ratio of the baryon charge to the lepton charge of the matter satisfies the inequality B/L>4/3, the formation of a W/sup -/ condensate is energetically favored at and above a certain density; with the opposite inequality, B/L<4/3, a W/sup +/ condensate is favored. In the limit of ultra-high densities the appearance of the W condensate leads to equalizing of the partial densities of various types of leptons and quarks.