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arXiv:1803.04993hep-th

Notes on Some Entanglement Properties of Quantum Field Theory

Edward Witten

Early discovery. Linked by one identifiable commenter. This paper is outside the main ranking; a mention is not an endorsement.

Abstract

These are notes on some entanglement properties of quantum field theory, aiming to make accessible a variety of ideas that are known in the literature. The main goal is to explain how to deal with entanglement when -- as in quantum field theory -- it is a property of the algebra of observables and not just of the states.

arXiv comments
78 pp, minor corrections in this version
Journal reference
Rev. Mod. Phys. 90, 45003 (2018)
DOI
doi:10.1103/RevModPhys.90.045003
Subjects
hep-thHigh Energy Physics, Theory math-phMathematical Physics quant-phQuantum Physics

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Discussed in comments2 threads

  1. Humanly traversable wormholes (2020) 1 comment

    • I can see why it might look like that from the outside, but the set of mathematical results that led up to it actually come from the angle of, “let’s try to prove that traversable wormholes and the negative energy densities required to create them are impossible.” In trying to…

      zachfView on HNParent context

  2. A singular mind: Roger Penrose on his Nobel Prize 1 comment

    • Good question! You can definitely add a constant to the Hamiltonian without changing the local physics, but I was referring to the stress-energy tensor (i.e. energy density), not the Hamiltonian (total energy). The stress tensor can be locally negative but still integrate to a…

      zachfView on HNParent context

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