Scholarlink

<p>The current paper examines cosmological model of Bianchi type-IX for a string cloud with variable cosmological constant Λ. The definitive model of the cosmos is derived by presuming that the shear scalar σ has a direct proportionate relationship with expansion. With m being a constant, we have the equation <InlineEquation ID="IEq1"> <EquationSource Format="TEX">\(\text{A}={\text{B}}^{\text{m}}\)</EquationSource> </InlineEquation>. Additionally, we assume that <InlineEquation ID="IEq2"> <EquationSource Format="TEX">\({\text{R}}^{3}\)</EquationSource> </InlineEquation>, where R is the scale factor, is inversely proportional to cosmological term Λ. This study shows that strings gradually vanish from the cosmos over time, which is in line with present astronomical data and offers an invaluable basis for examining how anisotropy evolved. Study also examines kinematical and physical aspects of the cosmological model.</p>

错误：搜索内容不能为空，请输入英文关键词
错误：关键词超出字数限制，请精简
高级检索

String model of Bianchi-IX universe with a variable cosmological constant in general relativity

  • 期刊论文

  • 发表日期：

    2026年6月26日

查看全文
  • Manali Vijayvargiya,
  • Laxmi Poonia

摘要

The current paper examines cosmological model of Bianchi type-IX for a string cloud with variable cosmological constant Λ. The definitive model of the cosmos is derived by presuming that the shear scalar σ has a direct proportionate relationship with expansion. With m being a constant, we have the equation \(\text{A}={\text{B}}^{\text{m}}\) . Additionally, we assume that \({\text{R}}^{3}\) , where R is the scale factor, is inversely proportional to cosmological term Λ. This study shows that strings gradually vanish from the cosmos over time, which is in line with present astronomical data and offers an invaluable basis for examining how anisotropy evolved. Study also examines kinematical and physical aspects of the cosmological model.