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Physics, Astronomy & Cosmology / Re: How long does a virtual photon exist ?
« on: 17/04/2019 10:43:11 »One way would be to define time as scale dependent. On very small scales it breaks down, in a similar fashion to the way decoherence is thought to exist.
Here is three quick discussions and points of view on space time. I am currently interested in all things emergent, including space time, but it covers the others as well https://motls.blogspot.com/2004/10/emergent-space-and-emergent-time.html here is a slightly longer link searching arxiv throws up too many papers to read http://thediagonal.com/2012/05/02/spacetime-as-an-emergent-phenomenon/