Work

Earthquakes as Probing Tools for Gravity Theories

Year: 2026

Type: article

Abstract: We propose a novel method for testing gravity models using seismic waves’ velocities. By imposing observational constraints on Earth’s moment of inertia and mass, we rigorously limit the gravitational models’ parameters within a 2σ accuracy. Our method, taking the PREM model as our reference and assuming its viability, constrains the parameters governing additional terms to the General Relativity Lagrangian to the following ranges: −2×109≲β≲109m2 for Palatini f(R) gravity, −8×109≲ϵ≲4×109m2 for Eddington-inspired Born–Infeld gravity, and −10−3≲Υ≲10−3 for Degenerate Higher-Order Scalar–Tensor theories. We also discuss potential avenues to enhance the proposed method, aiming to impose even tighter constraints on gravity models.

Source: Universe

DOI: 10.3390/universe12060155

Authors: Aleksander Kozak, Aneta Wojnar

Institutions: University of Wrocław, Universidad Católica del Norte

Language: English

Topic: Cosmology and Gravitation Theories

Subfield: Astronomy and Astrophysics

Field: Physics and Astronomy

Domain: Physical Sciences

Open Access status: gold

Estimated APC paid: $1,930

Funders: Akademie Věd České Republiky, Comisión Nacional de Investigación Científica y Tecnológica