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271 | Claudia de Rham on Modifying General Relativity

Sean Carroll's Mindscape: Science, Society, Philosophy, Culture, Arts, and Ideas

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The Mass of Gravitons: Challenges and Insights

This chapter examines the theoretical implications of assigning mass to the graviton, exploring how this modification could affect gravitational waves and introduce new polarizations. It discusses the potential dangers of ghostly modes with negative energy and the historical no-go theorems that complicate the development of nonlinear theories of massive gravity. The conversation emphasizes the importance of questioning established theories in physics and the potential for novel insights into the nature of gravity and cosmological models.

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