Equation Icon  1 ∫ { (∂ μ) 1 } Ec = -- ρ|∂tξ |2 − ρ|vj∇jξi|2 + ρ ξiξj∗∇i ∇j(˜μ + Φ ) + --- |δn|2 − ----|∇iδΦ |2 dV (244 ) 2 ∂n 4πG