Abstract
Understanding the entanglement of radiation in quantum field theory has been a long-standing challenge, with implications ranging from black hole thermodynamics to quantum information. We demonstrate how the case of the free fermion in dimensions reveals the details of the density matrix of the radiation produced by a moving mirror. Using the resolvent method rather than standard conformal field theory techniques we derive the Rényi entropies, modular Hamiltonian, and flow of the radiation and determine when mirrors generate unitary transformations.
- Received 10 March 2021
- Accepted 23 June 2021
DOI:https://doi.org/10.1103/PhysRevLett.127.051602
Published by the American Physical Society under the terms of the Creative Commons Attribution 4.0 International license. Further distribution of this work must maintain attribution to the author(s) and the published article’s title, journal citation, and DOI. Funded by SCOAP3.
Published by the American Physical Society