Abstract
We propose a relativistic gravitational theory leading to modified Newtonian dynamics, a paradigm that explains the observed universal galactic acceleration scale and related phenomenology. We discuss phenomenological requirements leading to its construction and demonstrate its agreement with the observed cosmic microwave background and matter power spectra on linear cosmological scales. We show that its action expanded to second order is free of ghost instabilities and discuss its possible embedding in a more fundamental theory.
- Received 6 January 2021
- Accepted 31 August 2021
DOI:https://doi.org/10.1103/PhysRevLett.127.161302
© 2021 American Physical Society
Physics Subject Headings (PhySH)
Focus
Dark Matter Alternative Passes Big Test
Published 15 October 2021
A cosmological model that doesn’t require dark matter has overcome a major hurdle in matching observations from the cosmic microwave background.
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