Addressing the high-f problem in pseudo-Nambu–Goldstone boson dark energy models with dark matter–dark energy interaction
| Autor: | Avik Paul, Debasish Majumdar, Upala Mukhopadhyay |
|---|---|
| Jazyk: | angličtina |
| Rok vydání: | 2020 |
| Předmět: |
Physics
Particle physics Cosmology and Nongalactic Astrophysics (astro-ph.CO) Physics and Astronomy (miscellaneous) Dark matter Planck mass FOS: Physical sciences lcsh:Astrophysics Astrophysics Astrophysics::Cosmology and Extragalactic Astrophysics Type (model theory) Computer Science::Digital Libraries Cosmology Goldstone boson lcsh:QB460-466 Dark energy lcsh:QC770-798 lcsh:Nuclear and particle physics. Atomic energy. Radioactivity Engineering (miscellaneous) Scalar field Quintessence Astrophysics - Cosmology and Nongalactic Astrophysics |
| Zdroj: | European Physical Journal European Physical Journal C: Particles and Fields, Vol 80, Iss 10, Pp 1-10 (2020) |
| Popis: | We consider a dark energy scenario driven by a scalar field $\phi$ with a pseudo Nambu Goldstone boson (pNGB) type potential $V(\phi)=\mu^4 \left( 1+ {\rm cos}(\phi/f) \right)$. The pNGB originates out of breaking of spontaneous symmetry at a scale $f$ close to Planck mass $M_{\rm{pl}}$. We consider two cases namely the quintessence dark energy and the other, where the standard pNGB action is modified by the terms related to Slotheon cosmology. We demonstrate that for this pNGB potential, high-$f$ problem is better addressed when interaction between dark matter and dark energy is taken into account and that Slotheon dark energy scenario works even better over quintessence in this respect. To this end, a mass limit for dark matter is also estimated. Comment: 20 pages, 12 figures |
| Databáze: | OpenAIRE |
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