Testing the Dark Universe through the Layzer-Irvine Equation
arXiv:2508.17064 · doi:10.1142/S021773232541007X
Abstract
We review the cosmic generalisation of the virial theorem known as the Layzer-Irvine equation, also independently derived by Dmitriev and Zeldovich. This equation has been studied in the literature for dark matter-dark energy interaction models, as well as in the context of alternative theories of gravity. We discuss results from the previous scenarios and point out future directions.
14 pages, Contribution to the "My Favourite Dark Matter Model" workshop, Açores, Portugal, 14-17 April 2025. Version to match the published one, minor typos corrected