Dark energy and modified scale covariant theory of gravitation
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DOI: 10.1016/j.newast.2019.101353
Abstract: Abstract Taking up four model universes we study the behaviour and contribution of dark energy to the accelerated expansion of the universe, in the modified scale covariant theory of gravitation. Here, it is seen that… read more here.
Keywords: modified scale; theory; accelerated expansion; energy ... See more keywords
Is curvature-assisted quintessence observationally viable?
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DOI: 10.1103/physrevd.110.106010
Abstract: Single-field models of accelerated expansion with nearly flat potentials, despite being able to provide observationally viable explanations for the early-time cosmic inflation and the late-time cosmic acceleration, are in strong tension with string theory evidence… read more here.
Keywords: accelerated expansion; curvature assisted; observationally viable; quintessence ... See more keywords
Surface tension: Accelerated expansion, coincidence problem & Hubble tension
Sign Up to like & getrecommendations! Published in 2020 at "International Journal of Modern Physics D"
DOI: 10.1142/s0218271820501151
Abstract: In this paper we give a physical explanation to the accelerated expansion of the Universe, alleviating the tension between the discrepancy of Hubble constant measurements. By the Euler Cauchy stress principle, we identify a controversy… read more here.
Keywords: tension; accelerated expansion; expansion; coincidence problem ... See more keywords
Cosmological Test of an Ultraviolet Origin of Dark Energy
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DOI: 10.3390/universe10050193
Abstract: The accelerated expansion of the Universe is impressively well described by a cosmological constant. However, the observed value of the cosmological constant is much smaller than expected based on quantum field theories. Recent efforts to… read more here.
Keywords: accelerated expansion; dark energy; cosmological constant; model ... See more keywords