Cosmological Models with a Varying $\Lambda$ -Term in Lyra's Geometry

Abstract

Cosmological models in Lyra's geometry are constructed and investigated with the assumption of a minimal interaction of matter with the displacement vector field and the dynamical $\Lambda$ - term. Exact solutions of the model equations are obtained for the different equations of state of the matter, that fills the universe, and for the certain assumptions on the decaying law for $\Lambda$.

8 pages, 5 figures

References in corpus (11)

• Observational Evidence from Supernovae for an Accelerating Universe and a Cosmological Constant
• Measurements of Omega and Lambda from 42 High-Redshift Supernovae
• First Year Wilkinson Microwave Anisotropy Probe (WMAP) Observations: Determination of Cosmological Parameters
• Seven-Year Wilkinson Microwave Anisotropy Probe (WMAP) Observations: Cosmological Interpretation
• The Case for a Positive Cosmological Lambda-term
• Probing Dark Energy with Baryonic Acoustic Oscillations from Future Large Galaxy Redshift Surveys
• Evolution of the Scale Factor with a Variable Cosmological Term
• Probing dark energy using baryonic oscillations in the galaxy power spectrum as a cosmological ruler
• Decaying Lambda cosmology, varying G and holography
• The Existence of an Old Quasar at $z=3.91$ and its Implications for $\Lambda (t)$ Deflationary Cosmologies
• Phenomenology of $\Lambda$-CDM model: a possibility of accelerating Universe with positive pressure

Cited by in corpus (4)

• Cosmology with an Effective $\Lambda$-Term in Lyra Manifold
• Dark Energy and Tachyon Field in Bianchi Type-V Space-time
• A new global 1-form in Lyra geometric cosmos model
• Exact Cosmological Models with the Yang - Mills Fields on Lyra Manifold