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https://www.um.edu.mt/library/oar/handle/123456789/56829
Title: | The Rh = ct universe and quintessence |
Authors: | Sultana, Joseph |
Keywords: | Gravitation Cosmology Dark energy (Astronomy) Dark matter (Astronomy) |
Issue Date: | 2016 |
Publisher: | Oxford University Press |
Citation: | Sultana, J. (2016). The Rh = ct universe and quintessence. Monthly Notices of the Royal Astronomical Society, 457(1), 212-216. |
Abstract: | Over the last few years the Rh = ct universe has received a lot of attention, particularly when observational evidence seems to favour this over the standard ∧ cold dark matter (∧CDM) universe. Like the ∧CDM, the Rh = ct universe is based on a Friedmann-Robertson-Walker (FRW) cosmology where the total energy density ρ and pressure p of the cosmic fluid contain a dark energy component besides the usual (dark and baryonic) matter and radiation components. However, unlike the∧CDMthis model has the simple equation of state ρ +3p=0, i.e. its total active gravitational mass vanishes, which would therefore exclude a cosmological constant as the source of its dark energy component. Faced with this issue, in this paper, we examine various possible sources for the dark energy component of the Rh = ct universe and show that quintessence which has been used in other various dynamical dark energy models could also be a possible source in this case. |
URI: | https://www.um.edu.mt/library/oar/handle/123456789/56829 |
Appears in Collections: | Scholarly Works - FacSciMat |
Files in This Item:
File | Description | Size | Format | |
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The_Rh_ct_universe_and_quintessence.pdf | 197.22 kB | Adobe PDF | View/Open |
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