Corpus ID: 235694432

Modular operator for null plane algebras in free fields

@inproceedings{Morinelli2021ModularOF,
  title={Modular operator for null plane algebras in free fields},
  author={Vincenzo Morinelli and Yoh Tanimoto and Benedikt Wegener},
  year={2021}
}
We consider the algebras generated by observables in quantum field theory localized in regions in the null plane. For a scalar free field theory, we show that the one-particle structure can be decomposed into a continuous direct integral of lightlike fibres, and the modular operator decomposes accordingly. This implies that a certain form of QNEC is valid in free fields involving the causal completions of half-spaces on the null plane (null cuts). We also compute the relative entropy of null… Expand

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