University of Cambridge > Talks.cam > Quantum Fields and Strings Seminars > Averaged null energy and the renormalisation group

  Browse A-Z

Log in

Googledetails Microsoftdetails

🔐 Log In

Information on

Subscribing to talksdetails Finding a talkdetails Adding a talkdetails Disseminating talksdetails Help and Documentationdetails

ℹ️ Information

Averaged null energy and the renormalisation group

Download to your calendar using vCal

If you have a question about this talk, please contact Bernardo Zan .

The averaged null energy operator (ANEC) is a light-ray integral of the null energy, which is known to have far-reaching consequences in CFT , such as the Lorentzian Inversion Formula. It is also closely connected to modular Hamiltonian in QFT . In this talk, I will discuss a new connection between the ANEC operator and monotonicity of the renormalization group. In particular, I will show how the 2d c-theorem and 4d a-theorem can be derived using the ANEC . This derivation relies on contact terms appearing in specific ANEC correlators. I will also review a new infinite set of constraints that can be derived from the ANEC in 2d QFT . This program hints at a more general role for light-ray operators in QFT , which I will argue for.

This talk is part of the Quantum Fields and Strings Seminars series.

This talk is included in these lists:

Note that ex-directory lists are not shown.

Other lists

Lewin Stroke & Rehabilitation Unit, Seminar Room, R2, Addenbrooke's Hospital Cambridge Enterprise, William Gates Building, JJ Thomson Avenue, CB3 0FD McGrath Centre, St Catharine’s College & online

Other talks

Group Presentation 2 Geometry and Generalization: The case of Grokking The Magic of Magnetism Group Work Ensemble inequivalence for systems with long-range interactions Title TBC
 

© 2006-2025 Talks.cam, University of Cambridge. Contact Us | Help and Documentation | Privacy and Publicity