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Is there weak birefringence of light in vacuo?

2019/05/16 by Nadine Stritzelberger, Stritzelberger, Nadine
Physics and Astronomy · #Cosmology and Gravitation Theories #FOS: Physical sciences #General Relativity and Quantum Cosmology (gr-qc) #High Energy Physics - Theory (hep-th) #Pulsars and Gravitational Waves Research #Relativity and Gravitational Theory #gr-qc #hep-th

paper · pdf · doi:10.48550/arxiv.1905.06941

6 pages. Prepared for Proceedings of the Fifteenth Marcel Grossmann meeting (Rome, 1-7 July 2018), Session AT5, Constructive Gravity

arxiv created 2019/05/16 · openalex publication_date 2019/05/16 · arxiv updated 2019/05/17 · openalex created_date 2025/10/10 · openalex updated_date 2026/07/28

Abstract

There are numerous reasons to study modifications of general relativity and the Standard Model of particle physics, ranging from modelling inflation to exploring galaxy rotation curves and the nature of dark matter. Here we study the most general linear theory of electromagnetism, which admits vacuum birefringence, and derive weak gravitational field equations for the underlying area metric spacetime geometry. We discuss the weak gravitational field sourced by a point mass in an area metric spacetime and find first order corrections to the linearized Schwarzschild metric of general relativity.

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