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SUMMARY:Title: Causal Sets\, Discrete Gravity - Professor Fay Dowker: Impe
 rial College\, London.
DTSTART:20241120T160000Z
DTEND:20241120T170000Z
UID:TALK222082@talks.cam.ac.uk
CONTACT:Amanda Stagg
DESCRIPTION:I will present the causal set approach to the problem of quant
 um gravity as the embodiment of a number of unifying hypotheses. Postulati
 ng the primacy of spacetime causal order together with discreteness of spa
 cetime unifies the spacetime manifold with its metric. The path integral a
 pproach to quantum foundations speaks General Relativity’s language of h
 istory and event and unifies quantum and classical dynamics as species of 
 measure theory. On the other hand\,  Einstein wrote in 1954: “The altern
 ative continuum-discontinuum seems to me to be a real alternative\; i.e.\,
  there is no compromise” and in giving up on the continuum fundamentally
 \, one may feel in danger of losing known continuum physics altogether. I 
 will alleviate this anxiety by giving examples of the recovery of continuu
 m concepts from causal set theory and set out some challenges for causal s
 et quantum gravity on the immediate horizon.  
LOCATION:MR3
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