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Self-tuning vacuum variable and cosmological constant
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Self-tuning vacuum variable and cosmological constant
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A spacetime-independent variable is introduced which characterizes a Lorentz-invariant self-sustained quantum vacuum. For a perfect (Lorentz-invariant) quantum vacuum, the self-tuning of this variable nullifies the effective energy density which enters the low-energy gravitational field equations. The observed small but nonzero value of the cosmological constant may then be explained as corresponding to the effective energy density of an imperfect quantum vacuum (perturbed by, e.g., the presence of thermal matter).
Forward citations
Cited by 3 Pith papers
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Topolons: Stable Particle-Like Remnants of Collapsed Vacuum Bubbles
Vacuum bubbles carrying quantized monopole flux on their walls collapse to stable particle-like remnants whose mass is fixed by the wall scale and conserved flux.
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Thermodynamics of homogeneous Universes: de Sitter, Bonnor-Melvin and static Einstein
Three homogeneous universes with distinct matter content obey the same thermodynamic equation for energy density, implying vanishing cosmological constant in vacuum.
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Thermodynamics of homogeneous Universes: de Sitter, Bonnor-Melvin and static Einstein
De Sitter, Bonnor-Melvin-Λ and static Einstein universes share the same thermodynamic energy-density equation despite dissimilar matter fields, yielding zero cosmological constant in Minkowski vacuum.
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