The SEMPARIS seminar webserver hosts annoucements of all seminars taking place in Paris area, in all topics of physics, mathematics and computer science. It allows registered users to receive a selection of announcements by email on a daily or weekly basis, and offers the possibility to archive PDF or Powerpoint files, making it available to the scientific community. [ More information ]
Seminars this week in series RENC-THEO | ||
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Thursday 25 April 2024, 10:00 at IHP, Grisvard (314) | RENC-THEO (Rencontres Théoriciennes) | hep-th |
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Abstract: | We show how to use general assumptions of the unknown UV theory to constrain the IR physics. Specifically, we can consider causality and unitarity of the S-matrix to set up a bootstrap problem. By solving it with numerical optimisation methods, we obtain the allowed EFT coefficients which are consistent with a unitary and causal UV completion. We focus on the scattering of photons in four dimensions with and without gravity. Finally, we present a method to compute all partial waves for spinning particles in arbitrary dimensions. |
Thursday 25 April 2024, 11:45 at IHP, 314 | RENC-THEO (Rencontres Théoriciennes) | hep-th |
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Abstract: | It is generally accepted that the confining phase transition in RS is first order, and is likely to be very suppressed. In this talk I demonstrate that the conclusion is model-dependent. Even simple variations weaken the strength of the transition and possibly even destroy the first order nature altogether. |
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