Possible Explanation of the Dynamics of the Universe Expansion without Dark Energy and without New Gravitational Degrees of Freedom
Open Access
- 1 January 2021
- journal article
- research article
- Published by Scientific Research Publishing, Inc. in Open Journal of Microphysics
- Vol. 11 (01), 1-7
- https://doi.org/10.4236/ojm.2021.111001
Abstract
The commonly accepted view is that the Universe is currently in the dark energy dominance era (estimated to start about 5 billion years ago)—the era where yet unknown dark energy dominates over the gravitation and is responsible for the observed acceleration of the Universe expansion. In the present paper, we consider a “gas” of a large number of gravitating neutral nonrelativistic particles having a practically infinite lifetime and zero or very little interaction with the rest of the matter (neutrinos could be an example). One of the central points is the application of Dirac’s Generalized Hamiltonian Dynamics to pairs of these particles. Another central point is the application of the virial theorem to pairs of zero total energy. We demonstrate that as a result, the gravitational interaction within the entire system effectively decreases. Together with the observational fact of the Universe rotation (according to Shamir’s study of 2020), this model provides a possible explanation of the entire history of the Universe expansion: both the era of the decelerating expansion and the current era of the accelerated expansion.Keywords
This publication has 24 references indexed in Scilit:
- What makes the Universe accelerate? A review on what dark energy could be and how to test itReports on Progress in Physics, 2017
- Dark matter, dark energy, and alternate models: A reviewAdvances in Space Research, 2017
- Dark Energy Versus Modified GravityAnnual Review of Nuclear and Particle Science, 2016
- Dark MatterPublished by Taylor & Francis Ltd ,2014
- Modifying gravity: you cannot always get what you wantPhilosophical Transactions of the Royal Society A: Mathematical, Physical and Engineering Sciences, 2011
- Dark Matter: A PrimerAdvances in Astronomy, 2011
- Application of Dirac's generalized Hamiltonian dynamics to atomic and molecular systemsJournal of Physics B: Atomic, Molecular and Optical Physics, 2001
- A sharp form of the Virial theoremBulletin of the American Mathematical Society, 1964
- Generalized Hamiltonian dynamicsProceedings of the Royal Society of London. Series A - Mathematical and Physical Sciences, 1958
- Generalized Hamiltonian DynamicsCanadian Journal of Mathematics, 1950