Boson mixing and flavor vacuum in the expanding Universe: a possible candidate for the dark energy

Abstract

We analyze the boson mixing in curved spacetime and compute the expectation value of the energy-momentum tensor of bosons on the flavor vacuum in spatially flat Friedmann-Lemaitre-Robertson-Walker metrics. We show that the energy-momentum tensor of the flavor vacuum behaves as the effective energy-momentum tensor of a perfect fluid. Assuming a fixed de Sitter background, we show that the equation of state can assume values in the interval [-1, 1], and, in the flat spacetime limit has a value -1, which is the one of the dark energy. The results here presented show that vacuum of mixed bosons like neutrino super-partners, can represent a possible component of the dark energy of the Universe.

arXiv comment19 pages, 2 figures

References in corpus (39)

• First Year Wilkinson Microwave Anisotropy Probe (WMAP) Observations: Determination of Cosmological Parameters
• Dynamics of dark energy
• The Cosmological Constant and Dark Energy
• f(R) Theories Of Gravity
• Unified cosmic history in modified gravity: from F(R) theory to Lorentz non-invariant models
• Type Ia Supernova Discoveries at z>1 From the Hubble Space Telescope: Evidence for Past Deceleration and Constraints on Dark Energy Evolution
• f(R) theories
• A Flat Universe from High-Resolution Maps of the Cosmic Microwave Background Radiation
• Dark Energy and the Accelerating Universe
• Curvature Quintessence
• Dark Matter and Dark Energy Interactions: Theoretical Challenges, Cosmological Implications and Observational Signatures
• Constraints on the equation of state of dark energy and the Hubble constant from stellar ages and the CMB
• Approaches to Understanding Cosmic Acceleration
• Dark Energy and Dark Gravity
• Backreaction in late-time cosmology
• Lemaitre-Tolman-Bondi model and accelerating expansion
• Neutrino oscillations in curved spacetime: an heuristic treatment
• Inhomogeneous cosmological models: exact solutions and their applications
• The cosmological constant from the ghost. A toy model
• The 3D Power Spectrum from Angular Clustering of Galaxies in Early SDSS Data
• A cosmological constant from the QCD trace anomaly?
• Neutrino Oscillations in Strong Gravitational Fields
• Flavor Oscillations from a Spatially Localized Source: A Simple General Treatment
• Higher-Order Corrections to the Effective Gravitational Action from Noether Symmetry Approach
• Neutrino mixing contribution to the cosmological constant
• Gluonic vacuum, q-theory, and the cosmological constant
• Recognising Axionic Dark Matter by Compton and de-Broglie Scale Modulation of Pulsar Timing
• KL Estimation of the Power Spectrum Parameters from the Angular Distribution of Galaxies in Early SDSS Data
• Neutrino mixing as a source of dark energy
• Dark energy and particle mixing
• Neutrinos in curved spacetimes: particle mixing and flavor oscillations
• Cosmological constant from quarks and torsion
• Axion-photon mixing in quantum field theory and vacuum energy
• Probing axion mediated fermion--fermion interaction by means of entanglement
• Quantum vacuum, dark matter, dark energy and spontaneous supersymmetry breaking
• Vacuum energy density kicked by the electroweak crossover
• The flavor vacuum in the expanding universe and dark matter
• Neutron Interferometry and axion like particles
• Beyond the MSW effect: Neutrinos in a dense medium

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