The Cardy-Verlinde formula and asymptotically flat charged black holes

We show that the modified Cardy-Verlinde formula without the Casimir effect term is satisfied by asymptotically hat charged black holes in arbitrary d imensions. Thermodynamic quantities of the charged black holes are shown to satisfy the energy-temperature relation of a two-dimensional CFT, which su pports the claim in our previous work (Phys. Rev. D61, 044013, hep-th/99102 44) that thermodynamics of charged black holes in higher dimensions can be effectively described by two-dimensional theories. We also check the Cardy formula for the two-dimensional black hole compactified from a dilatonic ch arged black hole in higher dimensions.