Cosmological surveys aim to constrain the ‘gravitational slip’, a key signature of modified gravity — but an as-yet unknown force acting on dark matter could mimic the gravitational slip and invalidate the test. By additionally factoring in a measurement of gravitational redshift, future surveys could have the power to distinguish between these possibilities.
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References
Daniel, S. F., Caldwell, R. R., Cooray, A. & Melchiorri, A. Large scale structure as a probe of gravitational slip. Phys. Rev. D. 77, 103513 (2008). This paper explains how gravitational slip can be used to test the theory of gravity.
Amendola, L. Coupled quintessence. Phys. Rev. D. 62, 043511 (2000). This paper proposes a model of dark matter interacting with a scalar field and discusses its implications.
Sobral Blanco, D. & Bonvin, C. Measuring the distortion of time with relativistic effects in large-scale structure. Mon. Not. R. Astron. Soc. 519, L39–L44 (2023). This paper shows how the distortion of time can be measured from cross-correlation of two populations of galaxies.
Abbott, T. M. C. et al. (DES Collaboration) Dark Energy Survey Year 3 results: Constraints on extensions to ΛCDM with weak lensing and galaxy clustering. Phys. Rev. D. 107, 083504 (2023). This paper provides current constraints on modified gravity parameters from the Dark Energy Survey combined with the Extended Baryon Oscillation Spectroscopic Survey.
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This is a summary of: Bonvin, C. & Pogosian, L. Modified Einstein versus modified Euler for dark matter. Nat. Astron. https://doi.org/10.1038/s41550-023-02003-y (2023).
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Can cosmology distinguish a dark force from a modification of gravity?. Nat Astron 7, 1023–1024 (2023). https://doi.org/10.1038/s41550-023-02026-5
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DOI: https://doi.org/10.1038/s41550-023-02026-5
