Ontology of Causal Dynamical Triangulation

  • #1
Summary:
Does CDT involve gravitons? How many dimensions? Presentism, Eternalism or Agnosticism about time?
Also, what does Sabine mean in this video by the sentence: (5:51 in the video)
It treats space and time differently which Einstein thought us not to do.

Thank you!
 

Answers and Replies

  • #2
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Also, what does Sabine mean in this video by the sentence:
It means that space and time are not treated on an equal footing. In other words, it's not manifestly relativistic covariant.
 
  • #3
It means that space and time are not treated on an equal footing. In other words, it's not manifestly relativistic covariant.
So it denies the reality of Spacetime?
 
  • #5
According to Sabine, yes.
Interesting, that would make sense since Wikipedia says CDT is related to Hořava gravity where space and time are treated differently too.
I am also a bit confused about the nature of space in CDT. Sabine says finite size of the triangles is only a mathematical aid.
Does this mean space is continuous or discrete in CDT?
 

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