Theories of Everything with Curt Jaimungal cover image

The Woman Who Broke Gravity | Claudia de Rham

Theories of Everything with Curt Jaimungal

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Massless Gravitation Faces Quantum Reality

The graviton, the theoretical particle responsible for gravity, is thought to acquire an exceptionally tiny mass, around 10 to the minus 32 or 33 electron volts, which is significantly smaller than the known mass of neutrinos at roughly 10 to the minus 3 electron volts. This illustrates a subtle departure from traditional general relativity, which posits that the graviton is massless. The introduction of quantum corrections raises critical questions about the graviton's mass and its relationship to the core principles of general relativity, particularly symmetry and the equivalence principle. Any modification to the concept of a massless graviton must consider the fundamental symmetries and covariance integral to the framework of general relativity.

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