2016/01/01 by Maxim A. Makukov, Eduard G. Mychelkin, Vladimir L. Saveliev
Computer Science · Physics and Astronomy · #Causality (physics) #Computational Physics and Python Applications #Cosmology and Gravitation Theories #Dark Matter and Cosmic Phenomena #Dark matter #Lorentz covariance #Lorentz transformation #Mixing (physics) #Neutrino #Scalar (mathematics) #Tachyon #gr-qc #hep-ph #physics.gen-ph
paper · pdf · doi:10.1142/s2010194516601332
Submitted to IJMPCS, reported at 9th Alexander Friedmann International Seminar, St. Petersburg, June 21-27, 2015
openalex publication_date 2016/01/01 · arxiv created 2016/02/09 · arxiv updated 2016/04/13 · openalex created_date 2016/06/24 · openalex updated_date 2026/08/05
We revive the historically first neutrino dark matter model, but with an additional assumption that neutrinos might exist in tachyonic almost sterile states. To this end we propose a group-theoretical algorithm for the description of tachyons. The key point is that we employ a distinct tachyon Lorentz group with another (superluminal) parametrization which does not require traditional introduction of imaginary masses and negative energies, and therefore does not lead to violation of causality and unitarity. Our dark matter model represents effectively scalar tachyonic neutrino-antineutrino conglomerate. Distributed all over the universe, such fluid behaves as stable isothermal/stiff medium which produces somewhat denser regions (‘smoothed halos’) around galaxies and clusters. It is shown to be consistent with observational effects (galactic rotation curves).