A Generalization of Electromagnetic Fluctuation-Induced Casimir Energy

Table 1

Common function in real and imaginary space.

	Real axis	Imaginary axis	Comments
Frequency			,
Electrical permittivity			, , ,
Magnetic permeability			, , ,
In-plane wavevector			Phase variation in plane is
Out-of-plane wavevector
Phase variation in -direction			In vacuum, is a real number for PW^a and imaginary for EW^b. is always positive

^aPropagating wave.
^bEvanescent wave.