  We study the charge screening effect in the hadron-quark mixed phase. By
including the charge screening effect, rearrangement of charged particles
occurs and some part becomes locally charge-neutral. As a result the equation
of state for the mixed phase becomes close to that given by the Maxwell
construction, which means that the Maxwell construction would effectively gain
the physical meaning again even in the system with two or more chemical
potentials. We also discuss the interplay of the surface tension and the
Coulomb interaction. Both effects would restrict the region of the mixed phase
in the core of hybrid stars.
