How Real Are Virtual Particles?

[Demystifier]

so why is this guy still referring to things we don't even know exists?

Because there are good theoretical reasons to believe that they exist. Still, what he does not want to admit, there are also some serious problems with the theoretical arguments that lead to these results.

But my point is: Even if the Unruh effect exists and if the standard theoretical description of this effect is correct, it has still nothing to do with virtual particles.

 

[Naty1]

Back to the original post: wiki has a decent explanation at

http://en.wikipedia.org/wiki/Virtual_particle

especially under "Properties"...

and adds some context for a number of posts here...