- #1
cygnet1
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According to the writings of Feynman and others, there is a probability amplitude for a particle to travel forward in time, interact with a field, travel backwards in time to a different spatial position, interact with the field again and resume its path forward in time before it reaches some detection device. To an observer traveling forward in time, this would look like a particle traveling forward in time, a particle/antiparticle pair being generated out of the vacuum state, the antiparticle miraculously making a head-on collision with the original particle and anhiliating it; meanwhile the second particle resumes its path forward in time to the detection equipment.
My question is this: Do we ever see direct evidence of this pair creation and subsequent anhiliation in accelerated particle experiments, or is this simply a computation strategy to predict probabilities of events we actually can detect?
My question is this: Do we ever see direct evidence of this pair creation and subsequent anhiliation in accelerated particle experiments, or is this simply a computation strategy to predict probabilities of events we actually can detect?