A scalar field with a 4D isotropic cutoff reduces to a 1D harmonic oscillator with vacuum energy (1/8)mΛ³, which the authors link to the observed dark energy scale via an exponential suppression factor.
Extra dimensions and its segregation during evolution
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A special isotropic energy-momentum tensor causes an anisotropic dynamical segregation of contracting extra dimensions in contrast to expanding dimensions, provided initial data put different arrows of time evolution. Features of such the configuration are problematic and in question.
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Scalar Field Action under 4D Isotropic Cut-off and its Cosmological Impact
A scalar field with a 4D isotropic cutoff reduces to a 1D harmonic oscillator with vacuum energy (1/8)mΛ³, which the authors link to the observed dark energy scale via an exponential suppression factor.