Quantum Mechanics of a Spherically Symmetric Causal Diamond in Minkowski Spacetime

Author(s): Mathew W. Bub, Temple He, Prahar Mitra, Yiwen Zhang, and Kathryn M. Zurek We construct the phase space of a spherically symmetric causal diamond in ($d+2$)-dimensional Minkowski spacetime. Utilizing the covariant phase space formalism, we identify the relevant degrees of freedom that localize to the $d$-dimensional bifurcate horizon and, upon canonical quantization, deter… [Phys. Rev. Lett. 134, 121501] Published Tue Mar 25, 2025