Ireneo James Membrere: Tripartite Entanglement Extraction from the Black Hole Vacuum

Title: Tripartite Entanglement Extraction from the Black Hole Vacuum
Abstract: Understanding the correlations of the quantum vacuum provides insight into fundamental problems in cosmology, gravity, and quantum field theory, providing important clues to understanding the structure of quantum spacetime. Most research has focused on bipartite entanglement of the quantum vacuum. Here I present the first results on multipartite entanglement outside of a black hole. Specifically, I examine the tripartite entanglement harvesting protocol of three Unruh-DeWitt detectors in the (2+1)-dimensional BTZ black hole spacetime. Previous research has shown that two detectors cannot extract bipartite entanglement from a quantum field in the vicinity of an event horizon due to intense Hawking radiation. I show that it is possible to harvest tripartite entanglement in regions where bipartite entanglement cannot be extracted. Curiously, tripartite entanglement is easier to harvest than bipartite entanglement.