I have done lots of quantum stuff but i really need to get up to speed on holography/einstein/ cosmology… i feel useless here
Discussion
Oh i see what you mean. since holography is about AdS and not dS. I think susskind is one of the few people working on dS/CFT but apparently its super hard.
Susskind had some ideas for the holography of FRW. Strominger is usually the one associated with dS/CFT. But this kind of research is more of the form “What would holography for dS look like if it existed?” as opposed to for AdS (and variants thereof) where we have several precise examples, where the dual field theory is known.
He mentioned he was working on it here and he said he wonders why more people don’t work on it (at 7:45)
FWIW I do suspect holography has something to do with the cosmological constant problem. I think one clue comes from an old paper by Cohen, Kaplan, Nelson (https://arxiv.org/abs/hep-th/9803132). You might find it interesting. The idea is that effective field theory put in a box breaks down when you put in enough energy to form a black hole as large as the box. Which gives a link between the box size (IR scale) and the maximum, cutoff energy (UV scale). Apply this to the size of the universe and you get a connection to the cosmological constant…