A Dark Energy Model in Kaluza-Klein Cosmology

Abstract

We study a dynamic $\Lambda$ model with varying gravitational constant $G$ under the Kaluza-Klein cosmology. Physical features and the limitations of the present model have been explored and discussed. Solutions are found mostly in accordance with the observed features of the accelerating universe. Interestingly, signature flipping of the deceleration parameter is noticed and the present age of the Universe is also attainable under certain stringent conditions. We find that the time variation of gravitational constant is not permitted without vintage $\Lambda$.

arXiv comment9 pages, 5 figures, Accepted in International Journal of Theoretical Physics

References in corpus (16)

• Observational Evidence from Supernovae for an Accelerating Universe and a Cosmological Constant
• Evolution of the Scale Factor with a Variable Cosmological Term
• A theoretician's analysis of the supernova data and the limitations in determining the nature of dark energy
• Running G and Λat low energies from physics at M_X: possible cosmological and astrophysical implications
• Acceleration at z>1?
• Cosmic Acceleration With A Positive Cosmological Constant
• Dark energy models with time-dependent gravitational constant
• The Status of Modern Five-Dimensional Gravity
• Cosmological consequences of a built-in cosmological constant model
• Kaluza-Klein Type Robertson Walker Cosmological Model With Dynamical Cosmological Term $\Lambda$
• Kaluza-Klein Cosmology with Varying G and $\Lambda$
• Cosmological models with Gurzadyan-Xue dark energy
• Scenario of inflationary cosmology from the phenomenological $\Lambda$ models
• Higher Dimensional Dark Energy Investigation with Variable $\Lambda$ and $G$
• The Equivalence between Different Dark (Matter) Energy Scenarios
• Searching for a Solution to the Age Problem of the Universe

Cited by in corpus (1)

• R\' enyi Holographic Dark Energy in Higher Dimension Cosmology