High Energy Theory Seminar

The representation theory of de Sitter space admits novel types of particles such as partially massless (PM) particles, but whether such particles can participate in consistent interacting theories remains unclear. We investigate the consistency of theories containing PM particles. Our strategy exploits the fact that PM fields correspond to partially conserved currents on the spacetime boundary, which generate symmetries in the boundary CFT.  These symmetries place stringent constraints on correlation functions of charged operators, allowing us to test the consistency of a proposed bulk spectrum.  This can be thought of as a generalization to de Sitter space of the Weinberg soft limit consistency conditions on massless spinning particles.  Based on ArXiv:2508.18353.

The talk is in 469 Lauritsen.

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