Inhomogeneous W-boson condensates in the standard electroweak theory at high fermionic densities

Cold dense fermionic matter at non-zero densities of broken gauge charges is considered in the context of the standard electroweak theory. It is shown that at sufficiently high densities, the system undergoes the second-order phase transition into a state with an inhomogeneous and anisotropic W-boson condensate. This state is metastable because of the anomalous non-conservation of (B+L). A possible scenario is outlined for the decay of this state which could occur instead of the instanton transitions. (orig.)