Cosmological Kinetic Mixing
arXiv:1504.05529 · doi:10.1103/PhysRevD.91.123528
Abstract
In this paper we generalize the kinetic mixing idea to time reparametrization invariant theories, namely, relativistic point particles and cosmology in order to obtain new insights for dark matter and energy. In the first example, two relativistic particles interact through an appropriately chosen coupling term. It is shown that the system can be diagonalized by means of a non-local field redefinition, and, as a result of this procedure, the mass of one the particles gets rescaled. In the second case, inspired by the previous example, two cosmological models (each with its own scale factor) are made to interact in a similar fashion. The equations of motion are solved numerically in different scenarios (dust, radiation or a cosmological constant coupled to each sector of the system). When a cosmological constant term is present, kinetic mixing rescales it to a lower value which may be more amenable to observations.
arXiv comment13pp, 18 figures
References in corpus (20)
- Dynamics of dark energy
- Particle Dark Matter: Evidence, Candidates and Constraints
- A Dynamical Solution to the Problem of a Small Cosmological Constant and Late-time Cosmic Acceleration
- A Theory of Dark Matter
- Secluded WIMP Dark Matter
- Astrophysical Signatures of Secluded Dark Matter
- Any Light Particle Search II -- Technical Design Report
- Halo Shape and Relic Density Exclusions of Sommerfeld-Enhanced Dark Matter Explanations of Cosmic Ray Excesses
- Bimetric MOND gravity
- Cosmological Solutions in Bimetric Gravity and their Observational Tests
- Sommerfeld enhancement: general results from field theory diagrams
- Relic densities including Sommerfeld enhancements in the MSSM
- Spherically symmetric spacetimes in massive gravity
- Bimetric gravity doubly coupled to matter: theory and cosmological implications
- Bi-metric Gravity and "Dark Matter"
- Relic density and CMB constraints on dark matter annihilation with Sommerfeld enhancement
- Consistent Scenarios for Cosmic-Ray Excesses from Sommerfeld-Enhanced Dark Matter Annihilation
- Dynamical sectors of a relativistic two particle model
- Searching for radiative neutrino mass generation at the LHC
- Analogies between nuclear physics and Dark Matter