ar X iv : h ep - p h / 01 10 22 3 v 1 1 7 O ct 2 00 1 Kaon Condensation and Enforced Charge Neutrality of the Color - Flavor Locked Phase

We investigate the influence of charged kaon condensation in hadronic sector on the formation of the electron-free charge neutral quark matter of equipartition of three light flavors, i.e., a phenomenon called " enforced electrical neutrality " of the color-flavor locked (CFL) phase. We employ the chiral quark model which is assumed to be applicable, " bottom-up, " toward chiral restoration while accessible to kaon condensation in the hadronic sector. Approaching " bottom-up " the high density regime is more appropriate in addressing the properties of compact stars than approaching " top-down " from asymptotic QCD. It turns out that the presence of hadronic kaon condensation makes the electron-free charge-neutral CFL phase energetically more favorable with a relatively small color-superconducting gap ∆ 0 ∼ 20 MeV compared to ∆ 0 ∼ 70 MeV required in the absence of such kaon condensation.