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Cosmology on Small Scales 2022: Dark Energy and the Local Hubble Expansion Problem
nusl-508686
Křížek, Michal
Dumin, Y. V.
Cosmology on Small Scales 2022
Prague (CZ)
20220921
2022
Friedmann equation
dark matter
dark energy
local Hubble expansion
https://css2022.math.cas.cz/proceedingsCSS2022.pdf
https://hdl.handle.net/11104/0333292
http://www.nusl.cz/ntk/nusl-508686
One hundred years ago, Russian mathematician and physicist Alexander A. Friedmann applied the system of Einstein equations to the three-dimensional sphere with a time varying radius. In this way, he obtained a nonlinear ordinary differential equation which is called the Friedmann equation after him and serves now as a cornerstone of the standard cosmological model. Unfortunately, it is well known that this model exhibits a number of paradoxes. Thus, the main goal of the CSS 2022 Conference Proceedings is to discuss whether and how the Friedmann equation can be applied at the various spatial scales, from our local cosmic neighborhood up to the whole Universe, and if the existence of dark matter and dark energy are merely artifacts of the excessive extrapolations.
230 s.
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