No fifth force in a scale invariant universe

Abstract

We revisit the possibility that the Planck mass is spontaneously generated in scale invariant scalar-tensor theories of gravity, typically leading to a "dilaton." The fifth force, arising from the dilaton, is severely constrained by astrophysical measurements. We explore the possibility that nature is fundamentally Weyl-scale invariant and argue that, as a consequence, the fifth force effects are dramatically suppressed and such models are viable. We discuss possible obstructions to maintaining scale invariance and how these might be resolved.

8 pages, submitted to PRD

References in corpus (9)

• Cosmology and the Fate of Dilatation Symmetry
• The relativistic pulsar-white dwarf binary PSR J1738+0333 II. The most stringent test of scalar-tensor gravity
• Quantum scale invariance, cosmological constant and hierarchy problem
• Scale invariance, unimodular gravity and dark energy
• Multifield Dynamics of Higgs Inflation
• Weyl Current, Scale-Invariant Inflation and Planck Scale Generation
• Higgs-Dilaton cosmology: Universality vs. criticality
• Two-loop scale-invariant scalar potential and quantum effective operators
• Naturalness of exponential cosmon potentials and the cosmological constant problem

Cited by in corpus (7)

• Selected topics in scalar-tensor theories and beyond
• Weyl Current, Scale-Invariant Inflation and Planck Scale Generation
• Matter matters in Einstein-Cartan gravity
• T-Model Inflation and Bouncing Cosmology
• Scale Invariant Gravity and Black Hole Ringdown
• Quintessence in Multi-Measure Generalized Gravity Stabilized by Gauss-Bonnet/Inflaton Coupling
• Higgs-Dilaton Inflation in Einstein-Cartan gravity