Cosmology

宇宙学中的体粘性模型

Bulk Viscous Cosmological Model

A theoretical framework in cosmology describing the expansion of the universe where the expansion rate is modified by a bulk viscosity effect within the fluid components of the universe. / 宇宙学中的一个理论框架，描述宇宙的膨胀，其中宇宙膨胀率受到宇宙流体成分内部体粘性效应的修正。

Knowledge type: 自然理论
First proposed or discovered
Proposer: Turkey Farm member
Creator: 农场主
Last updated: 2026-11-13 18:07:00

Sub-knowledge points

Bulk Viscosityf(Q, Lm) GravityDark Energy Equation of State

Higher-order knowledge points

General RelativityStandard Cosmological Model (Lambda-CDM)

Main parameters and performance indicators

Bulk Viscosity Coefficient: Governs the dissipative effect in the cosmic fluidEquation of State Parameter: Describes the relationship between pressure and energy density

Open problems

Determining the precise physical origin of the bulk viscosity in the early universeResolving tensions between different observational datasets (e.g., Pantheon+SH0ES vs DESI)

Related literature

ranked by community stars

Bayesian analysis of the bulk-viscous cosmological model in f(Q, Lm) gravity framework with Pantheon+SH0ES and DESI dataOpen source

宇宙学中的体粘性模型

Sub-knowledge points

Higher-order knowledge points

Main parameters and performance indicators

Open problems

Related products and links