Институт теоретической и математической физики

МГУ имени М.В. Ломоносова

ITMP Seminar "QFT in AdS instead of LSZ"

ITMP Seminar
22 февраля 2023

Dear Colleagues,

We are pleased to announce that the next ITMP seminar will be held on Wednesday, Feb 22, 18:00 (Moscow time). It will be organised via Zoom.


Speaker: Xiang Zhao, EPFL Lausanne, FSL

Title: QFT in AdS instead of LSZ

Abstract: Quantum field theories in AdS generate conformal correlation functions on the boundary, and in the limit where AdS is nearly flat one should be able to extract an S-matrix from such correlators. In this talk I will discuss a particularly simple position-space procedure to do so. In the first half I will state the prescription, motivate it through perturbative examples and discuss some of its subtleties. In the second half, I will move on to non-perturbative establishment of the flat-space limit prescription. With minimal assumptions I will show that the resulting S-matrix element from the flat-space limit obeys a dispersion relation and the non-linear unitarity conditions.


If you want to join the seminar please register here before 16:00, February 22 here.

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