by dorlomin » Fri 23 Sep 2011, 15:49:36
$this->bbcode_second_pass_quote('rockdoc123', 'I')f memory serves Feynman talked about virtual photons which had the property to go faster or slower than the conventional speed of light. I think he talks about this in his book on light and matter.
There was a lot of discussion in the physics community a decade ago with regards to theories on the variable speed of light. I haven't paid much attention to particle physics discussions for many years so please educate me!
Feynman was talking about 'force carriers' part of the guage theory (quantum electrodynamics), all forces require a particle to carry it. I have strong doubts that the speed of light varies in that but perhaps Feynman was talking from the perspective of the photon. I will need to do a bit of refresher reading round this.
The variable speed of light was kicking around in the 90s as part of the explanation for something like the speed of the universes expansion (inflation) or something. I think that is all way on the back burner these days.
Anyway I would say 99% likely experimental error. 0.999% that it is something to do with the bit of space-time that the particles are passing through (some weird kink in it or perhaps the famed rolled up dimensions)
And maybe just 0.0001% particles traveling faster than c.