Speaker
Description
Entangled states in quantum field theory are not the exception but rather the norm. Even seemingly simple states such as the vacuum in Minkowski or Sitter spacetime are rich in the entanglement they contain. In this presentation, I will discuss recently developed techniques aimed at uncovering and characterizing the distribution of entanglement in field theory. These tools include the definition and computation of the "purifier" of a given mode from the complex structure of a pure state, and how these purifying modes can be leveraged to gain insights into the entanglement content of the state and its spatial distribution. These tools become useful in various scenarios, including black holes, the early universe, and potentially in understanding entanglement in quantum gravity. This talk will discuss some applications to the early universe.
