Monday, September 12, 2022

Is There Life Left In Verlinde's Emergent Gravity After All?

Eric Verlinde's paradigm of trying to derive gravity as emergent from Standard Model interactions via entanglement and entropy would, if it could be made to work, be even more reductionist than Deur's approach that seeks to explain dark matter and dark energy phenomena via vanilla General Relativity. In effect, Verlinde's approach turns the Standard Model into a theory of everything. 

Early analysis of Verlinde's proposal showed a flaw in it, but some advocates of his approach think they've fixed the problem.

I am also a fan of the transactional interpretation of quantum mechanics, so I'm heartened to see it used here.
This is a review of new developments in entropic gravity in light of the Relativistic Transactional Interpretation (RTI). A transactional approach to spacetime events can give rise in a natural way to entropic gravity (in the way originally proposed by Eric Verlinde) while also overcoming extant objections to that research program. The theory also naturally gives rise to a Cosmological Constant and to Modified Newtonian Dynamics (MOND) and thus provides a physical explanation for the phenomena historically attributed to "dark energy" and "dark matter".
A. Schlatter, R. E. Kastner, "Gravity from Transactions: A Review of Recent Developments" arXiv:2209.04025 (September 8, 2022).

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