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Dark Energy or Modified Gravity?

Smeenk, Chris and Weatherall, James Owen (2023) Dark Energy or Modified Gravity? [Preprint]


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We consider some of the epistemic benefits of exploring "theory space" in the context of modifications of general relativity with intended applications in cosmology. We show how studying modifications of general relativity can help in assessing the robustness of empirical inferences, particularly in inaccessible regimes. We also discuss challenges to sharply distinguishing apparently distinct directions in theory space.

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Item Type: Preprint
Smeenk, Chriscsmeenk2@uwo.ca0000-0002-6101-0048
Weatherall, James
Keywords: cosmology, dark energy, modified gravity, strong equivalence principle, theory space
Subjects: Specific Sciences > Physics > Cosmology
Depositing User: Dr. Chris Smeenk
Date Deposited: 25 Apr 2023 12:27
Last Modified: 25 Apr 2023 12:27
Item ID: 22015
Subjects: Specific Sciences > Physics > Cosmology
Date: 20 April 2023

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