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Miguel Paulos (CNRS)
Thursday 05 October 2017, 13:00-14:00
The S-matrix strikes back
- 👤 Speaker: Miguel Paulos (CNRS)
- 📅 Date & Time: Thursday 05 October 2017, 13:00 - 14:00
- 📍 Venue: Potter Room (first floor, Pav. B)
Abstract
In this talk I will describe recent work aiming to reinvigorate the 50 year old S-matrix program, which seeks to constrain scattering of massive particles non-perturbatively. I will begin by considering quantum fields in anti-de Sitter space and show that one can extract information about the S-matrix by considering correlators in conformally invariant theories. The latter can be studied with “bootstrap” techniques, which allow us to constrain the S-matrix. I will also show that this can be done directly, without using the CFT crutch, by using crossing symmetry and unitarity and a particular ansatz. In this way we derive universal bounds on QFTs in 2,3 and 4 dimensions.
Series This talk is part of the Quantum Fields and Strings Seminars series.
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