An inhomogeneous Lemaitre model with a space-dependent cosmological constant and a unified dark fluid can reproduce the local and early-universe Hubble constants and generates testable predictions for expansion rates and redshift drift.
Exact spherically-symmetric inhomogeneous model with n perfect fluids
1 Pith paper cite this work. Polarity classification is still indexing.
1
Pith paper citing it
abstract
We present the exact equations governing the dynamics of a spherically-symmetric inhomogeneous model with n decoupled and non-comoving perfect fluids. Thanks to the use of physically meaningful quantities we write the set of 3+2n equations in a concise and transparent way. The n perfect fluids can have general equations of state, thus making the model extremely flexible to study a large variety of cosmological and astrophysical problems. As applications we consider a model sourced by two non-comoving dust components and a cosmological constant, and a model featuring dust and a dark energy component with negligible speed of sound.
citation-role summary
background 1
citation-polarity summary
fields
gr-qc 1years
2025 1verdicts
CONDITIONAL 1roles
background 1polarities
unclear 1representative citing papers
citing papers explorer
-
Inhomogeneous model with a space dependent Cosmological Constant
An inhomogeneous Lemaitre model with a space-dependent cosmological constant and a unified dark fluid can reproduce the local and early-universe Hubble constants and generates testable predictions for expansion rates and redshift drift.