Ricci dark energy in bumblebee gravity model

Abstract

The Ricci dark energy is a model inspired by the holographic dark energy models with the dark energy density being proportional to Ricci scalar curvature. Here this model is studied in the bumblebee gravity theory. It is a gravitational theory that exhibit spontaneous Lorentz symmetry breaking. Then the modified Friedmann equation is solved for two cases. In the first case the coupling constant $\xi$ is equal to zero. And in the second case a solution in the vacuum, where the bumblebee field becomes a constant that minimizes the potential, is considered. The coupling constant controls the interaction gravity-bumblebee.

arXiv comment10 pages, 4 figures, accepted for publication in MPLA

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• Probing Schwarzschild-like Black Holes in Metric-Affine Bumblebee Gravity with Accretion Disk, Deflection Angle, Greybody Bounds, and Neutrino Propagation
• An exact stationary axisymmetric vacuum solution within a metric--affine bumblebee gravity
• Black Hole Superradiance in the Presence of Lorentz Symmetry Violation
• How does non-metricity affect particle creation and evaporation in bumblebee gravity?
• Gravitational traces of bumblebee gravity in metric-affine formalism
• Bumblebee gravity: spherically-symmetric solutions away from the potential minimum
• On metric-affine bumblebee model coupled to scalar matter
• Gravitational time advancement effect in Bumblebee gravity for Earth bound systems
• One-loop corrections in Maxwell-metric-affine bumblebee gravity
• Primordial gravitational waves from spontaneous Lorentz symmetry breaking
• Gravitational aspects of a new bumblebee black hole
• Effects of bumblebee gravity on neutrino motion