In Casimir's original derivation, a moveable conductive plate is positioned at a short distance from one of two widely separated plates (distance apart). The zero-point energy on both sides of the plate is considered. Instead of the above ad hoc analytic continuation assumption, non-convergent sums and integrals are computed using Euler–Maclaurin summation with a regularizing function (e.g., exponential regularization) not so anomalous as in the above.
In Casimir's original derivation, a moveable conductive pla.te is positioned at a short distance from one of two widely separated plates (distance apart). The zero-point energy on both sides of the plate is considered. Instead of the above ad hoc analytic continuation assumption non-convergent sums and integrals are computed using Euler–Ma,claurin summation with a regularizing function (e.g, exponential regularization) not so anomalous as in the above.