Constraining interacting dark energy models with flux destabilization
arXiv:0707.2299 · doi:10.1016/j.physletb.2007.07.058
Abstract
A destabilization in the transfer energy flux from the vacuum to radiation, for two vacuum decay laws relevant to the dark energy problem, is analyzed using the Landau-Lifshitz fluctuation hydrodynamic theory. Assuming thermal (or near thermal) equilibrium between the vacuum and radiation, at the earliest epoch of the Universe expansion, we show that the law due to renormalization-group running of the cosmological constant term, with parameters chosen not to spoil the primordial nucleosynthesis scenario, does soon drive the flux to fluctuate beyond its statistical average value thereby distorting the cosmic background radiation spectrum beyond observational limits. While the law coming from the saturated holographic dark energy does not lead the flux to wildly fluctuate, a more realistic non--saturated form shows again such anomalous behavior.
12 pages, minor correction, to appear in Physics Letters B
References in corpus (20)
- A Model of Holographic Dark Energy
- Effective Field Theory, Black Holes, and the Cosmological Constant
- Holographic dark energy and cosmic coincidence
- Evolution of the Scale Factor with a Variable Cosmological Term
- On the scaling behavior of the cosmological constant and the possible existence of new forces and new light degrees of freedom
- Holography and Variable Cosmological Constant
- Cosmology with Self-Adjusting Vacuum Energy Density from a Renormalization Group Fixed Point
- Variable Cosmological Constant as a Planck Scale Effect
- Early-universe constraints on a Primordial Scaling Field
- Running G and Λat low energies from physics at M_X: possible cosmological and astrophysical implications
- Thermodynamics of Decaying Vacuum Cosmologies
- Renormalization Group and Decoupling in Curved Space
- Holographic dark energy in Brans-Dicke theory
- Testing the running of the cosmological constant with Type Ia Supernovae at high z
- Renormalization-group running of the cosmological constant and its implication for the Higgs boson mass in the Standard Model
- Nonsaturated Holographic Dark Energy
- Renormalization Group and Decoupling in Curved Space: II. The Standard Model and Beyond
- Hint for Quintessence-like Scalars from Holographic Dark Energy
- Renormalization Group and Decoupling in Curved Space: III. The Case of Spontaneous Symmetry Breaking
- Renormalization-group running cosmologies and the generalized second law
Cited by in corpus (7)
- Some Issues Concerning Holographic Dark Energy
- Revisit of constraints on holographic dark energy: SNLS3 dataset with the effects of time-varying and different light-curve fitters
- Holographic dark energy interacting with dark matter in a Closed Universe
- Fluctuations of the flux of energy on the apparent horizon
- Holographic dark energy in the DGP model
- A coupled vacuum energy model producing endless alternated phases of accelerated and decelerated expansion
- Entanglement in holographic dark energy models