I Ontology of Causal Dynamical Triangulation

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?
 
Jacobson’s work (1995) [1] demonstrated that Einstein’s equations can be derived from thermodynamic principles, suggesting gravity might emerge from the thermodynamic behavior of spacetime, tied to the entropy of horizons. Other researchers, such as Bekenstein [2] and Verlinde [3], have explored similar ideas, linking gravity to entropy and holographic principles. I’m interested in discussing how these thermodynamic approaches might apply to quantum gravity, particularly at the Planck...

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