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.
Installing of cosmological constant
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abstract
An artificial scale of observable cosmological constant is dynamically related to its natural bare value due to an installation of relevant coherent state for the inflationary field in a finite volume of early Universe, because of exponential suppression of probability to find the state with zero number of quanta. Homogeneous quantum fluctuations of the field actually put hard constraints on the total amount of inflation.
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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.