Super-cool Dark Matter
Thomas Hambye, Alessandro Strumia, Daniele Teresi

TL;DR
This paper proposes a novel dark matter production mechanism via super-cooling during low-scale inflation in dimensionless theories, linking it to QCD phase transition and baryogenesis.
Contribution
It introduces a new super-cooling based mechanism for dark matter relic density generation in dimensionless models with low-scale inflation.
Findings
Super-cooling suppresses dark matter abundance to observed levels.
The mechanism operates at the QCD phase transition scale.
It applies to both old and new dimensionless models.
Abstract
In dimension-less theories of dynamical generation of the weak scale, the Universe can undergo a period of low-scale inflation during which all particles are massless and super-cool. This leads to a new mechanism of generation of the cosmological Dark Matter (DM) relic density: super-cooling can easily suppress the amount of DM to the desired level. This is achieved for TeV-scale DM, if super-cooling ends when quark condensates form at the QCD phase transition. Along this scenario, the baryon asymmetry can be generated either at the phase transition or through leptogenesis. We show that the above mechanism takes place in old and new dimension-less models.
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.
