The Goldstone Awakens: Unimodular dark energy in scale-invariant R squared gravity

arXiv:2607.16405 · astro-ph.CO, gr-qc, hep-th · Submitted 2026-07-17 · Read on arXiv

Mariaveronica De Angelis, Javier Rubio

astro-ph.CO, gr-qc, hep-th

Submitted: 2026-07-17

Comments: 32 pages, 8 figures

License: http://arxiv.org/licenses/nonexclusive-distrib/1.0/

Terminology

• Reheating — 40× in this paper · explained in 2 episodes
• Quintessence — 22× in this paper · explained in 2 episodes
• Benchmark — 21× in this paper · explained in 2 episodes
• Consistency — 15× in this paper · explained in 3 episodes
• Standard Model — 6× in this paper
• Symmetry Breaking — 5× in this paper · explained in 3 episodes
• Calibration — 2× in this paper · explained in 7 episodes
• Trace — 2× in this paper · explained in 2 episodes
• Abundance — 1× in this paper · explained in 1 episode
• Boltzmann Equation — 1× in this paper · explained in 2 episodes
• Decoupling — 1× in this paper · explained in 2 episodes
• Degeneracy — 1× in this paper · explained in 3 episodes
• Fine-Tuning — 1× in this paper · explained in 5 episodes
• Generalization — 1× in this paper · explained in 13 episodes
• Metastability — 1× in this paper · explained in 2 episodes
• Robustness — 1× in this paper · explained in 5 episodes
• Universality Class — 1× in this paper · explained in 2 episodes

Sources

• Naturalness and Dimensional Transmutation in Classically Scale-Invariant Gravity
• Conformal symmetry: towards the link between the Fermi and the Planck scales
• Gravity, Scale Invariance and the Hierarchy Problem
• Standard Model Meets Gravity: Electroweak Symmetry Breaking and Inflation
• One residue to rule them all: Electroweak symmetry breaking, inflation and field-space geometry
• The Standard Model Higgs boson as the inflaton
• Asymptotic safety of gravity and the Higgs boson mass
• Agravity
• On the robustness of the primordial power spectrum in renormalized Higgs inflation
• Scale-invariant alternatives to general relativity
• On the geometrical interpretation of scale-invariant models of inflation
• Emergent scale symmetry: Connecting inflation and dark energy
• Inflation and reheating in scale-invariant scalar-tensor gravity
• Inflation in a scale invariant universe
• Scale-invariant alternatives to general relativity. III. The inflation--dark-energy connection
• Higgs inflation
• Scale independent $R^2$ inflation
• Weyl $R^2$ inflation with an emergent Planck scale
• Nonminimal Coleman--Weinberg Inflation with an $R^2$ term
• Einstein-Cartan gravity, matter, and scale-invariant generalization

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