Casimir Force: Where Does the Energy Come From?

[blackwizard]

Sorry if i posted this in the wrong section.

Iv just read about the casimir force which can cause 2 parallel plates 2 move towards each other in empty space. Where does the plates kinetic energy come from?

 

[Rade]

I suggest this recent review paper by Jaffe at MIT:
http://xxx.lanl.gov/PS_cache/hep-th/pdf/0503/0503158.pdf