Cosmic acceleration without quintessence
Narayan Banerjee (Department of Physics, Jadavpur University, India), and Diego Pavon (Department of Physics, Autonomous University of Barcelona,, Spain)
TL;DR
This paper suggests that Brans-Dicke theory could account for the universe's current accelerated expansion without needing a cosmological constant or quintessence, offering an alternative explanation within scalar-tensor gravity.
Contribution
It introduces the idea that Brans-Dicke theory alone can explain cosmic acceleration, challenging the necessity of dark energy components.
Findings
Brans-Dicke theory can produce accelerated expansion consistent with observations
No need for cosmological constant or quintessence in this model
Provides an alternative framework for understanding cosmic acceleration
Abstract
It is argued that the Brans-Dicke theory may explain the present accelerated expansion of the universe without resorting to a cosmological constant or quintessence matter
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