Casimir and Vacuum Energy of 5D Warped System and Sphere Lattice Regularization

Understand

We examine the Casimir energy of 5D electro-magnetism in the recent standpoint.

• Z$_2$ symmetry is taken into account.
• After confirming the consistency with the past result, we do new things based on a new regularization.
• The regularization is based on the minimal area principle and the regularized configuration is the {\it sphere lattice}.