{getToc} $title={Table of Contents}
Summary
The paper discusses interacting dynamical dark energy models with linear and non-linear interacting terms. Constraints on interaction strength are obtained using CMB, BAO, and SNIa data. The models are compared to the ΛCDM model, and the results show that the interacting models worsen the Hubble tension.
Highlights
- Interacting dynamical dark energy models are studied with linear and non-linear interacting terms.
- Constraints on interaction strength are obtained using CMB, BAO, and SNIa data.
- The models are compared to the ΛCDM model.
- The interacting models worsen the Hubble tension.
- The non-linear interacting model shows a non-zero interaction at >1σ significance level.
- The models have a lower Hubble constant value compared to the ΛCDM model.
- The interacting models have a higher proportion of dark matter and a lower proportion of dark energy.
Key Insights
- The interacting dynamical dark energy models with linear and non-linear interacting terms are more physically consistent than previous models, as they allow for the evolution of the dark energy equation of state parameter.
- The constraints on interaction strength obtained using CMB, BAO, and SNIa data do not allow for the determination of whether the DE-DM interaction exists in Model I and Model II.
- The non-linear interacting model (Model III) shows a non-zero interaction at >1σ significance level, indicating that the energy flow from dark energy to dark matter is preferred by the data.
- The interacting models have a lower Hubble constant value compared to the ΛCDM model, which worsens the Hubble tension.
- The models have a higher proportion of dark matter and a lower proportion of dark energy compared to the ΛCDM model, which affects the large-scale structure of the universe.
- The results suggest that the interacting dynamical dark energy models are not preferred by the current observational data, but future surveys may provide tighter constraints on the interaction in the dark sector.
- The study highlights the importance of considering non-linear interactions in dark energy models, as they can provide new insights into the nature of dark energy and its interaction with dark matter.
Mindmap
If MindMap doesn't load, please refresh the page.
Citation
Neomenko, R. (2024). Constraints on the interaction strength in the model of interacting dynamical dark energy with linear and non-linear interacting terms (Version 1). arXiv. https://doi.org/10.48550/ARXIV.2412.20551