All About the Einstein Field Equations - Physics Forums
Feb 26, 2024 · The Einstein Field Equations (EFE) are a set of ten interrelated differential equations that form the core of Einstein's general theory of relativity. These equations describe how matter and …
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.
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 …
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 …
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 …
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 …
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.
Learn Inflation Balloon Analogy Misconceptions - Physics Forums
Sep 16, 2015 · FIFTH: COSMOLOGICAL TIME There are sometimes attempts to bring cosmological time into the analogy by considering that the 3D center of the balloon represents the singularity 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
How Does the Cosmological Constant Λ Define the Cosmic Scale of …
Jul 29, 2008 · The discussion centers on the cosmological constant Λ and its implications for the cosmic scale of space-time, specifically through the equation Λ = 1/L², where L represents the invariant …