Reheating and relic gravitational waves as remedies for degeneracies of non-canonical natural inflation
Karam Bahari, Soma Heydari, Kayoomars Karami

TL;DR
This paper investigates a non-canonical inflation model, showing that relic gravitational waves can help resolve parameter degeneracies that are not broken by reheating constraints alone.
Contribution
It demonstrates that relic gravitational wave spectra can break degeneracies in inflationary parameters that reheating constraints cannot resolve.
Findings
Relic gravitational waves help break degeneracies in model parameters.
Reheating parameters alone are insufficient to resolve all degeneracies.
Allowed ranges for inflation duration and parameters are constrained by observational data.
Abstract
Here, a natural non-canonical inflationary model based on a power-law Lagrangian is investigated. We analyze the scalar spectral index and the tensor-to-scalar ratio of the model and identify their degeneracies with respect to the free parameters. Notably, and show effective independence from the model parameters due to degeneracies in the slow-roll parameters that leads to unresolved parameter degeneracies. Employing the constraints on reheating parameters such as the reheating duration , the reheating temperature , and the equation of state parameter , is found to be insufficient to fully break these degeneracies. However, the relic gravitational wave spectrum provides a way to break degeneracy with respect to the non-canonical parameter , degeneracy with respect to the potential parameter …
Peer Reviews
No public reviews on file for this paper yet. If you reviewed it on a platform where reviews are public (OpenReview, ICLR, NeurIPS, ICML), you can paste yours below so the community can read it here.
Videos
No videos yet. Explain this paper in a talk, walkthrough, or lecture? Add one.
Taxonomy
TopicsCosmology and Gravitation Theories · Geophysics and Gravity Measurements · Solar and Space Plasma Dynamics
