Research PaperNo Access

Institute of Science and Environment and FBL, University of Saint Joseph, Estrada Marginal da Ilha Verde, 14-17, Macao, P. R. China

https://doi.org/10.1142/S0217732324501153Cited by:1 (Source: Crossref)

Abstract

The cosmological constant is normally introduced as an additional term entering the Einstein–Hilbert (EH) action. In this letter, we demonstrate that, instead, it appears naturally from the standard EH action as an invariant term emerging from spacetime symmetries. We then demonstrate that the same constraint emerging from this invariant suppresses the short wavelength modes and it favors the long wavelength ones. In this way, inside the proposed formulation, the observed value for the vacuum energy density is obtained naturally from the zero-point quantum fluctuations.

Keywords:

PACS: 11.30.−j, 95.30.Sf, 98.80.Es

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