Abstract: Black holes have large classical entropy, with the nature of the underlying microstates remaining a longstanding subject of interest. Among other expected properties, these microstates are expected to be chaotic. Recently, it has been conjectured that they are also`fortuitous’: they change erratically as one tunes the parameters of the theory.  In this talk (based on work in progress with … Read More

Abstract: Embedding a dS universe into an AdS spacetime is easy but identifying its CFT dual is nontrivial. In this talk, I focus on AdS3 gravity coupled to dS2 end-of-the-world branes, and identify its holographic dual to be a unitary holographic CFT2 with non-unitary conformal boundary conditions. These boundary conditions have complex g-functions and appear in conjugate pairs. The associated … Read More

Abstract:  We provide a proposal generalizing the asymptotic Euclidean state preparation to a state preparation by the deformation of a partial Cauchy slice in Lorentzian spacetime. With a proper choice of boundary conditions, we claim that the state forms a Hilbert space $\bf{H}_\sigma$ associated to the boundary $\sigma$ of the partial Cauchy slice.  Assuming that $\bf{H}_\sigma$ factorises over connected components … Read More