Higgs-dilaton model revisited: can dilaton act as QCD axion?
arXiv:2212.06739 · doi:10.1103/PhysRevD.107.123503
Abstract
The Standard Model Lagrangian has an approximate scale symmetry in the high-energy limit. This observation can be included in the fundamental principle of the ultimate theory of Nature as the requirement of the exact quantum scale invariance. In this setup, all low-energy particle phenomenology can be obtained as a result of the spontaneous breaking of scale symmetry leading to the presence of the extra massless scalar field -- the dilaton. We explore the scenario in which this field is capable of solving the strong CP-problem in QCD in a similar way as in QCD axion models. The dilaton, playing the role of the axion, is coupled to the QCD sector and acquires a mass term due to non-perturbative breaking of scale symmetry. We show that the dilaton can form dark matter after the low-scale inflation. As a proof of concept, we construct a model of Higgs-driven inflation consistently realising the axion-like dilaton dark matter production compatible with the CMB data.
arXiv comment32 pages, 8 figures; additional calculations, comments and references added, several plots upgraded, typos corrected
References in corpus (34)
- Cosmology and the Fate of Dilatation Symmetry
- Planck 2018 results. X. Constraints on inflation
- Axion Cosmology
- The QCD axion, precisely
- The landscape of QCD axion models
- Higgs inflation: consistency and generalisations
- A Revised Experimental Upper Limit on the Electric Dipole Moment of the Neutron
- Axion Cosmology Revisited
- Quantum scale invariance, cosmological constant and hierarchy problem
- Scale invariance, unimodular gravity and dark energy
- Higgs-Dilaton Cosmology: From the Early to the Late Universe
- The QCD Axion Window and Low Scale Inflation
- The large-scale modulation of the density distribution in standard axionic CDM and its cosmological and physical impact
- Higgs-Dilaton Cosmology: an effective field theory approach
- Preheating in Palatini Higgs inflation
- Axion cold dark matter in view of BICEP2 results
- Hidden Inflaton Dark Matter
- Higgs inflation in the Palatini formulation with kinetic terms for the metric
- Quantum Effects in Palatini Higgs Inflation
- No fifth force in a scale invariant universe
- Higgs-Dilaton cosmology: Are there extra relativistic species?
- Higgs-Dilaton Cosmology: An inflation - dark energy connection and forecasts for future galaxy surveys
- Standard Model Meets Gravity: Electroweak Symmetry Breaking and Inflation
- Gravity, Scale Invariance and the Hierarchy Problem
- Critical point Higgs inflation in the Palatini formulation
- Tree-level unitarity in Higgs inflation in the metric and the Palatini formulation
- Conformal symmetry: towards the link between the Fermi and the Planck scales
- High-Scale Axions without Isocurvature from Inflationary Dynamics
- CFT data and spontaneously broken conformal invariance
- Exact quantum conformal symmetry, its spontaneous breakdown, and gravitational Weyl anomaly
- Anomaly-free scale symmetry and gravity
- Revisiting isocurvature bounds in models unifying the axion with the inflaton
- Palatini formulation for gauge theory: implications for slow-roll inflation
- Higgs-Dilaton Inflation in Einstein-Cartan gravity