A Global Approach with Cutoff Exponential Function, Mathematically Well Defined at the Outset, for Calculating the Casimir Energy: The Example of Scalar Field

<table>A sketch of the subtraction process which takes place on the regularization of the Casimir effect of a spherical shell.</table>

Advances in High Energy Physics

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Figure 2

Figure 2: A Global Approach with Cutoff Exponential Function, Mathematically Well Defined at the Outset, for Calculating the Casimir Energy: The Example of Scalar Field 

Figure 2 | A Global Approach with Cutoff Exponential Function, Mathematically Well Defined at the Outset, for Calculating the Casimir Energy: The Example of Scalar Field 