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New Relativistic Theory for Modified Newtonian Dynamics

Constantinos Skordis and Tom Złośnik
Phys. Rev. Lett. 127, 161302 – Published 15 October 2021
Physics logo See Focus story: Dark Matter Alternative Passes Big Test

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.

  • Figure
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  • 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)

Gravitation, Cosmology & Astrophysics

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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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Authors & Affiliations

Constantinos Skordis* and Tom Złośnik

  • CEICO, Institute of Physics (FZU) of the Czech Academy of Sciences, Na Slovance 1999/2, 182 21 Prague, Czech Republic

  • *skordis@fzu.cz
  • zlosnik@fzu.cz

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Issue

Vol. 127, Iss. 16 — 15 October 2021

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