Saturday, 23 April 2016

general relativity - Is it proven experimentally that the speed of causality (light) is the maximum speed?


Is it possible to have an alternative theory which is consistent with experiments supporting GR, but which doesn't mandate a speed limit on causality?


In other words, I understand there is experimental evidence for gravitational/relativistic time dilation, spacetime curvature, etc. but is there any inherent reason why these effects cannot be explained without the max speed requirement?



QM clearly shows that "communication" can happen instantaneously but, supposedly, causality cannot break the speed limit.


I also know the speed of light is derived from other principles, but is there anything that says that speed has to be a max limit of any kind?


I want to emphasize that the QM "communication" doesn't imply causation or information exchange, merely the establishment of the entangled attribute. Bell's inequality tells us that the attributes were not predetermined and were only established upon measuring one of the particles.




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