#68 Dark Energy: Could quantum gravity models arising from holography explain cosmological acceleration?
“Could quantum gravity models arising from holography explain cosmological acceleration?” https://phys.org/news/2023-06-quantum-gravity-holography-cosmological.html
Assumptions that are added by this model: (highlighted)
- “the gravitational physics is encoded in a simpler, lower dimensional non-gravitational quantum system” as a hologram,
- “… explain cosmic acceleration … via a dark energy whose density changes with time”,
- “at some point the density of dark energy (DE) decreases below zero, reaching a negative value”, i.e. a negative DE density is claimed to make sense.
Assumptions that are abandoned by this model: [none]
This model can fit data better than our current model, but since it uses three additional assumptions, this is a moot point. More epicycles always fit the data better.
This idea is dismissed.
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Sounds like: Erik Verlinde Public Lecture: A New View on Gravity and the Dark Side of the Cosmos . More about Erik Verlinde’s work is found in Wikipedia: Entropic gravity . No coincidence perhaps that one of the researchers (Mark van Raamsdonk) who carried out the study has a Dutch name too.