2026-07-072026-07-07http://salesiana.dossiersoluciones.com/handle/123456789/175659The Kramers-Kronig relations are derived for the permittivity of the usual plasma model which neglects dissipation and of a generalized model which takes into account the interband transitions. The generalized plasma model is shown to be consistent with all precision experiments on the measurement of the Casimir force.9 pages, 2 figures, 1 table; to appear in J. Phys. A: Math. Theor. (fast track communication)Quantum PhysicsStatistical MechanicsHigh Energy Physics - Theorytext