Dark Matter Is The New BBN
arXiv:2306.07339 · doi:10.1016/j.dark.2023.101353
Abstract
Measurements of the primordial element abundances provide us with an important probe of our universe's early thermal history, allowing us to constrain the expansion rate and composition of our universe as early as after the Big Bang. Prior to this time, we have essentially no empirical information on which to base any such claims. In this paper, we imagine a future time in which we have not only detected the particles that make up the dark matter, but have measured their mass and annihilation cross section with reasonable precision. In analogy to the light element abundances, the dark matter abundance in this scenario could be used to study and constrain the expansion rate and composition of our universe at the time of dark matter freeze out, which for a standard thermal relic occurs at , corresponding to , many orders of magnitude prior to the onset of Big Bang nucleosynthesis. As examples, we consider how such measurements could be used to constrain scenarios which feature exotic forms of radiation or matter, a ultralight scalar, or modifications to gravity, each of which have the potential to be much more powerfully probed with dark matter than with the light element abundances.
11 pages, 5 figures
References in corpus (20)
- Precise Relic WIMP Abundance and its Impact on Searches for Dark Matter Annihilation
- Primordial Nucleosynthesis in the Precision Cosmology Era
- Discovering the QCD Axion with Black Holes and Gravitational Waves
- Primordial Nucleosynthesis: from precision cosmology to fundamental physics
- The effects of He I 10830 on helium abundance determinations
- Environmental Dependence of Masses and Coupling Constants
- Distinguishing Modified Gravity from Dark Energy
- Simplified Dark Matter Models for the Galactic Center Gamma-Ray Excess
- Big Bang Nucleosynthesis as a Probe of New Physics
- Coupled Variations of Fundamental Couplings and Primordial Nucleosynthesis
- BBN And The CMB Constrain Neutrino Coupled Light WIMPs
- Thermal Dark Matter From A Highly Decoupled Sector
- BBN constraints on the annihilation of MeV-scale dark matter
- Non-universal BBN bounds on electromagnetically decaying particles
- The Return of the Templates: Revisiting the Galactic Center Excess with Multi-Messenger Observations
- Phenomenology of 10^32 Dark Sectors
- Big Bang Nucleosynthesis constraints on higher-order modified gravities
- Naturally Stable Right-Handed Neutrino Dark Matter
- Dark matter relic density in Gauss-Bonnet braneworld cosmology
- Nucleosynthesis Predictions and High-Precision Deuterium Measurements