Coupled Multi-Proca Vector Dark Energy

Abstract

We study a new class of vector dark energy models where multi-Proca fields $A_{\mu }^a$ are coupled to cold dark matter by the term $f(X){\tilde{\mathcal{L}}}_m$ where $f(X)$ is a general function of $X\equiv -\frac{1}{2}{A}_a^{\mu }{A}_{\mu }^a$ and ${\tilde{\mathcal{L}}}_m$ is the cold dark matter Lagrangian. From here, we derive the general covariant form of the novel interaction term sourcing the field equations. This result is quite general in the sense that encompasses Abelian and non-Abelian vector fields. In particular, we investigate the effects of this type of coupling in a simple dark energy model based on three copies of canonical Maxwell fields to realize isotropic expansion. The cosmological background dynamics of the model is examined by means of a dynamical system analysis to determine the stability of the emergent cosmological solutions. As an interesting result, we find that the coupling function leads to the existence of a novel scaling solution during the dark matter dominance. Furthermore, the critical points show an early contribution of the vector field in the form of dark radiation and a stable de Sitter-type attractor at late times mimicking dark energy. The cosmological evolution of the system as well as the aforementioned features are verified by numerical computations. Observational constraints are also discussed to put the model in a more phenomenological context in the light of future observations.

arXiv commentLaTeX file in RevTex 4.1 style, 14 pages in double column, 13 figures. v2: minor changes according to the referee's suggestions. v3: Published version in Physics of the Dark Universe

References in corpus (38)

• Observational Evidence from Supernovae for an Accelerating Universe and a Cosmological Constant
• Measurements of Omega and Lambda from 42 High-Redshift Supernovae
• Modified Gravity and Cosmology
• A Phantom Menace? Cosmological consequences of a dark energy component with super-negative equation of state
• The clustering of galaxies in the completed SDSS-III Baryon Oscillation Spectroscopic Survey: cosmological analysis of the DR12 galaxy sample
• Cosmology and the Fate of Dilatation Symmetry
• A Dynamical Solution to the Problem of a Small Cosmological Constant and Late-time Cosmic Acceleration
• Large Magellanic Cloud Cepheid Standards Provide a 1% Foundation for the Determination of the Hubble Constant and Stronger Evidence for Physics Beyond LambdaCDM
• k-Inflation
• The High-Z Supernova Search: Measuring Cosmic Deceleration and Global Cur vature of the Universe Using Type Ia Supernovae
• Generalized G-inflation: Inflation with the most general second-order field equations
• Massive Gravity
• Dark Matter and Dark Energy Interactions: Theoretical Challenges, Cosmological Implications and Observational Signatures
• Planck evidence for a closed Universe and a possible crisis for cosmology
• Dynamical systems applied to cosmology: dark energy and modified gravity
• Generalization of the Proca Action
• A systematic approach to generalisations of General Relativity and their cosmological implications
• Vector Inflation
• A Lower Growth Rate from Recent Redshift Space Distortion Measurements than Expected from Planck
• Vector Field Models of Inflation and Dark Energy
• Could dark energy be vector-like?
• Cosmic Acceleration from Abelian Symmetry Breaking
• Derivative self-interactions for a massive vector field
• Dark Energy in light of Multi-Messenger Gravitational-Wave astronomy
• Generalized Proca action for an Abelian vector field
• Phases of New Physics in the CMB
• Effective Theory of Interacting Dark Energy
• Extended vector-tensor theories
• On the 4D generalized Proca action for an Abelian vector field
• Dark radiation from particle decay: cosmological constraints and opportunities
• Generalized multi-Proca fields
• Dynamical analysis for a vector-like dark energy
• Multiple kinetic k-essence, phantom barrier crossing and stability
• Dynamics of three-form dark energy with dark matter couplings
• Coupled vector dark energy
• Gaugessence: a dark energy model with early time radiation-like equation of state
• Attractor Solution in Coupled Yang-Mills Field Dark Energy Models
• A power-law coupled three-form dark energy model

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• Dynamics of inflation with mutually orthogonal vector fields in a closed universe
• Late-Time Anisotropy Sourced by a 2-Form Field Non-Minimally Coupled to Cold Dark Matter
• Dynamics of dark energy in a scalar-vector-torsion theory
• Scrutinizing coupled vector dark energy in light of data
• Gravitational wave signatures from dark sector interactions
• Gravitating Meron-like topological solitons in massive Yang-Mills theory and the Einstein-Skyrme model
• Theory of interacting vector dark energy and fluid
• Screening fifth forces in scalar-vector-tensor theories
• Dynamical Shortcomings in the Generalized SU(2) Proca Theory: Challenges for Cosmic Acceleration
• Phantom cosmology with arbitrary potential: New accelerating scaling attractors
• Kinetic coupled tachyon: A dynamical system analysis
• Internal symmetry to the rescue: well-posed 1+1 evolution of self-interacting vector fields
• An effective fluid description of scalar-vector-tensor theories under the sub-horizon and quasi-static approximations