High-energy density implications of a gravitoweak unification scenario

Abstract

We discuss how a scenario recently proposed for the morphing of macroscopic gravitation into weak interactions at the attometer scale affects our current understanding of high-energy density phenomena. We find that the Yukawa couplings of the fundamental fermions are directly related to their event horizons, setting an upper bound $y_f\le \sqrt{2}$ for their observability through gauge interactions. Particles with larger Yukawa couplings are not precluded, but should interact only gravitationally, providing a natural candidate for dark matter. Furthermore, the quantum vacuum contribution to the cosmological constant is reduced by several orders of magnitude with respect to the current estimates. The expected running of the Newtonian gravitational constant could provide a viable alternative scenario to the inflationary stage of the Universe.

References in corpus (14)

• Quantum Spacetime Phenomenology
• Renormalization group improved black hole spacetimes
• Ultraviolet Fixed Point and Generalized Flow Equation of Quantum Gravity
• On the scaling behavior of the cosmological constant and the possible existence of new forces and new light degrees of freedom
• Quantum gravity at a TeV and the renormalization of Newton's constant
• Bounds on the Nonminimal Coupling of the Higgs Boson to Gravity
• On weak interactions as short-distance manifestations of gravity
• Dark energy as a mirage
• Is the evidence for dark energy secure?
• Quantum Corrections to Newton's Law
• Higgs-induced spectroscopic shifts near strong gravity sources
• Running coupling in electroweak interactions of leptons from f(R)-gravity with torsion
• Gravitational vacuum polarization phenomena due to the Higgs field
• Massive Elementary Particles and Black Hole Physics in Resummed Quantum Gravity

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