Couldn't the cosmological constant also have some sort of "dynamics ...
Nov 21, 2025 · Examine observational data related to the cosmological constant and dark energy Astronomers, physicists, and cosmologists interested in the fundamental nature of the universe, …
All About the Einstein Field Equations - Physics Forums
Feb 26, 2024 · Tiny Numbers, Big Effects: The cosmological constant () in the EFE, originally introduced by Einstein to allow for a static universe, is estimated at less than . It’s small but drives the …
Learn About the Friedmann Equation and the Cosmos
Dec 22, 2017 · The cosmological principle is fundamental to determining the geometry of the universe. For example, homogeneity and isotropy reduce the possible spaces that can exist due to symmetry.
Questioning the timescape model • Physics Forums
Dec 19, 2025 · The discussion centers on the comparison between the standard homogeneous cosmological model, ΛCDM, and the timescape cosmology, which incorporates the backreaction of …
Is Introducing a New Cosmological Model Based on Aether Theory ...
Jul 20, 2025 · The forum discussion centers on the permissibility of introducing a new cosmological model based on aether theory. Sean B. inquires about the acceptance of personal theories within the …
The Units of the Cosmological Constant: eV^2 • Physics Forums
Jun 1, 2022 · I was referring to , the energy density of the cosmological constant. The first paper you cite in the OP is discussing the scale of the energy density, the others discuss the constant appearing in …
What Is the Steady-state Model and Why It’s No Longer Viable
Dec 8, 2015 · This preferred frame is a key element in the steady state model and stands in contrast to the cosmological constant, which preserves the equivalence principle. The C Field vs. the …
Learn About the FLRW Metric and The Friedmann Equation
Jan 9, 2018 · Cosmological redshift is a very useful tool to calculate the rate of expansion since the expansion causes redshift. We can find this relationship using the FLRW metric.
Is the Universe Finite, or Is It Infinite? - Physics Forums
Mar 16, 2024 · Standard cosmological models come in three flavors, open, flat, and closed, [Carroll] whose spatial curvatures are negative, zero, and positive. The open and flat types have infinite …
Evolution of the Energy Density Parameters • Physics Forums
Jan 26, 2017 · The discussion highlights the formula for Omega evolution, including contributions from matter, radiation, and the cosmological constant. Key equations discussed include the critical density …