Undergrad Ontology of Causal Dynamical Triangulation

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Causal Dynamical Triangulation (CDT) treats space and time unequally, contradicting Einstein's principles of relativity. This approach implies a denial of the reality of spacetime, as noted by Sabine. The discussion also references the connection between CDT and Hořava gravity, which similarly differentiates between space and time. There is confusion regarding whether space in CDT is continuous or discrete, with Sabine indicating that the finite size of triangles serves merely as a mathematical tool. Overall, the treatment of space and time in CDT raises significant questions about its implications for our understanding of the universe.
TheHeraclitus
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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!
 
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TheHeraclitus said:
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.
 
Demystifier said:
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?
 
TheHeraclitus said:
So it denies the reality of Spacetime?
According to Sabine, yes.
 
Demystifier said:
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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