PIRSA:16020087 Scientific Series Quantum Fields and Strings

DOI10.48660/16020087

Series: Quantum Fields and Strings

(2016). Causality Constraints in Conformal Field Theory. Perimeter Institute. https://pirsa.org/16020087

Causality Constraints in Conformal Field Theory. Perimeter Institute, Feb. 09, 2016, https://pirsa.org/16020087 

@misc{ pirsa_PIRSA:16020087,
  doi = {10.48660/16020087},
  url = {https://pirsa.org/16020087},
  author = {},
  keywords = {Quantum Fields and Strings},
  language = {en},
  title = {Causality Constraints in Conformal Field Theory},
  publisher = {Perimeter Institute},
  year = {2016},
  month = {feb},
  note = {PIRSA:16020087 see, \url{https://pirsa.org}}
}

Abstract

In effective field theory, causality fixes the signs of certain interactions.  I will describe how these Lorentzian constraints are encoded in the Euclidean theory, and use the conformal bootstrap to derive analogous causality constraints in CFT. Applied to spinning fields, these constraints include (some of) the Hofman-Maldacena bounds derived from conformal collider physics. I will also discuss applications to holographic theories.

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