Reinterpreting MOND: coupling of Einsteinian gravity and spin of cosmic neutrinos?

Abstract

Several rare coincidences of scales in standard particle physics are needed to explain (i) why neutrinos have mass, (ii) why the negative pressure of the cosmological dark energy (DE) coincides with the positive pressure of random motion of dark matter (DM) in bright galaxies, (iii) why Dark Matter in galaxies seems to have a finite phase-space density, and to follow the Tully-Fisher-Milgrom relation of galaxy rotation curves. The old idea of self-interacting DM is given a new spin: we propose that the neutrino spin-gravity coupling could lead to a cosmic neutrino dark fluid with a an internal energy density varying as function of the local acceleration of the neutrino fluid with respect the CMB background. We link the Tully-Fisher-Milgrom relation of spiral galaxies (or MOND) with the relativistic pressure of the neutrino dark fluid without modifying Einsteinian gravity.

arXiv comment8p, some changes of notations, references added

References in corpus (3)

• Observational evidence for self-interacting cold dark matter
• On the stability of Dark Energy with Mass-Varying Neutrinos
• Model of Dark Matter and Dark Energy Based on Gravitational Polarization

Cited by in corpus (8)

• Modified Newtonian Dynamics (MOND): Observational Phenomenology and Relativistic Extensions
• Theory of Dark Matter Superfluidity
• The KBC void and Hubble tension contradict $\Lambda$CDM on a Gpc scale $-$ Milgromian dynamics as a possible solution
• An Alternative to Particle Dark Matter
• MOND plus classical neutrinos not enough for cluster lensing
• Another Path for the Emergence of Modified Galactic Dynamics from Dark Matter Superfluidity
• The relation between stellar mass and weak lensing signal around galaxies: Implications for MOND
• Sterile neutrino fits to dark matter mass profiles in the Milky Way and in galaxy clusters