Couldn't the cosmological constant also have some sort of …
Nov 21, 2025 · Why should we believe that the cosmological constant is indeed a constant, and not another parameter that changes with spacetime dynamics? Obviously it would make the …
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 …
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 …
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 …
Does the Cosmological Principle in any way underpin Big Bang …
Aug 25, 2023 · Does the Cosmological Principle have any role in underpinning Big Bang Theory? The hypothesis of the expansion of the universe is based on two assumptions: the theory of …
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.
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 …
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 …
Is Introducing a New Cosmological Model Based on Aether Theory ...
Jul 20, 2025 · Is it ok to introduce a new model for cosmology here? It is a variation on the aether theory I don't think has been noticed or explored specifically and I think has some clout and …
How does the symbol Λ cosmological constant relate to Ω_Λ or ρ_Λ?
Jun 18, 2022 · Undergrad How does the symbol Λ cosmological constant relate to Ω_Λ or ρ_Λ? Buzz Bloom Jun 18, 2022 Constant Cosmological Cosmological constant Symbol Click For …