Speaker
Description
There has been a new line of development for deriving cosmological spacetimes from quantum mechanical Matrix Models. In particular, it has been shown how an expanding metric might be coarse-grained from abstract matrix degrees of freedom, and how one naturally gets a scale-invariant spectrum of primordial perturbations in this model without introducing arbitrary tunable parameters, by considering a thermal state. In this talk, I will describe how a "collective-field" formalism can be employed to derive, and explore, the emergent "droplet" geometry coming from gauged multi-matrix models, going beyond the classic example of the single matrix case, by integrating out the off-diagonal strings. Time-permitting, I will discuss perturbations around this nontrivial vacuum and their possible entanglement structure.