Can virtual particles break the law that energy cannot be created or destroyed?

[Haelfix]

"Not really (afaik)."

Well, there is a trivial way. Namely by changing regularization and renormalization schemes.

Both series could sum to infinity but *naively* differ term by term. Changing renormalization schemes will typically rearrange the kth and (k+1) terms. So they are in effect equivalent, but it might look at first glance like they are not.

 

[tom.stoer]

Good point! One should add this to the list I compiled