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.
Quantum origin of suppression for vacuum fluctuations of energy
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By example of a model with a spatially global scalar field, we show that the energy density of zero-point modes is exponentially suppressed by an average number of field quanta in a finite volume with respect to the energy density in the stationary state of minimal energy. We describe cosmological implications of mechanism.
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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.