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Categorizing Different Approaches to the Cosmological Constant Problem

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arxiv gr-qc/0411093 v3 pith:5LM6MBVW submitted 2004-11-18 gr-qc hep-th

Stefan Nobbenhuis This is my paper · ORCID
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keywords differentconstantcosmologicalproblemaddressingadvantagesapproachapproaches
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We have found that proposals addressing the old cosmological constant problem come in various categories. The aim of this paper is to identify as many different, credible mechanisms as possible and to provide them with a code for future reference. We find that they all can be classified into five different schemes of which we indicate the advantages and drawbacks. Besides, we add a new approach based on a symmetry principle mapping real to imaginary spacetime.

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Cited by 7 Pith papers

Reviewed papers in the Pith corpus that reference this work. Sorted by Pith novelty score. OpenAlex reports about 172 citations worldwide. Full citation record

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  4. Microscopic entropy of de Sitter spacetime and entropic solution to the old cosmological constant problem

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    Requiring the RG flow of the de Sitter entropy parameter α to increase monotonically toward the infrared yields a cosmological constant matching the observed value.

  5. Dynamical system analysis of the cosmological phases in Palatini $k$-essence gravity

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    Dynamical systems analysis of a Palatini k-essence model identifies fixed points for quasi-de-Sitter epochs, scaling solutions, and quintessence phases connected by heteroclinic orbits in flat FLRW cosmology.

  6. Cosmological searches for the neutrino mass scale and mass ordering

    astro-ph.CO 2019-07 unverdicted novelty 4.0 of 10

    Thesis summarizing an upper limit of 0.12 eV on the neutrino mass sum, bias calibration via CMB lensing cross-correlations, and tighter limits plus stronger normal-ordering preference in non-phantom dynamical dark ene...

  7. Running Vacuum in the expanding Universe: a unified QFT paradigm for Inflation and Dark Energy

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    The running vacuum model derives dynamical vacuum energy from QFT in curved spacetime, using H^4 terms for inflation and H^2 terms for dark energy while G evolves logarithmically.

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