IAS Quantum Aspects of Black Holes Group Meeting

Abstract: It was recently observed that introducing an observer makes the sphere path integral in de Sitter space positive, allowing for a state-counting interpretation. To better assess the status of this proposal, we analyze additional observables along the observer’s worldline, including the two-point function and the out-of-time-order correlator, where we take into account both the gravitational backreaction and the “recoil” effects. I will also outline a new construction of a wormhole that contributes to the square of the late time two-point function. This is based on ongoing work with Douglas Stanford and Haifeng Tang.