paper

Planetary seismology as a test of modified gravity proposals

arXiv:2303.17213 · doi:10.1103/PhysRevD.108.044055

Abstract

We demonstrate that it is possible to test models of gravity, such as Palatini and Eddington-inspired Born-Infeld models, using seismic data from Earth. By incorporating additional limitations on Earth's moment of inertia and mass given from observational data, the models' parameters can be restricted to a level of accuracy. Our novel tool provides that the parameter parametrizing the quadratic curvature term in the gravitational Lagrangian of Palatini gravity is constrained to while the Eddington-inspired Born-Infeld gravity parameter is restricted to . We also discuss further enhancements to the proposed method, aimed at imposing even more stringent constraints on modified gravity proposals.

arXiv comment11 pages, 3 figures

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