Effect of fast scale factor fluctuations on cosmological evolution
arXiv:2105.12567 · doi:10.3390/universe7060164
Abstract
In this paper we study the corrections to the Friedmann equations due to fast fluctuations of the universe scale factor. Such fast quantum fluctuations were recently proposed as a potential solution of the cosmological constant problem. They also induce strong changes to the current sign and magnitude of the average cosmological force, thus making it one of the potential probable causes for the modification of Newtonian dynamics in galaxy-scale systems. It appears that quantum fluctuations of the scale factor also modify the Friedmann equations, leading to considerable modification of cosmological evolution. In particular, they give rise to late-time accelerated expansion of the universe, and they may also considerably modify the effective universe potential.
arXiv comment9 pages, 4 figures, accepted for publication in Universe, special issue "Quantum Models for Cosmology"
References in corpus (13)
- The Case for a Positive Cosmological Lambda-term
- Quantum gravity and minimum length
- Planck 2013 results. XXIX. The Planck catalogue of Sunyaev-Zeldovich sources: Addendum
- How the huge energy of quantum vacuum gravitates to drive the slow accelerating expansion of the Universe
- Non-equilibrium dynamics of an unstable quantum pendulum
- Structure formation in cosmologies with oscillating dark energy
- Emergent Cosmology Revisited
- Information Geometry and Quantum Phase Transitions in the Dicke Model
- Cosmic clocks: A Tight Radius - Velocity Relationship for HI-Selected Galaxies
- Observation of Discrete Oscillations in a Model-independent Plot of Cosmological Scale Factor vs. Lookback Time and a Scalar Field Model
- Quantum Spacetime Instability and Breakdown of Semiclassical Gravity
- Oscillating cosmological force modifies Newtonian dynamics
- Quantum fluctuations stabilize an inverted pendulum