The grand canonical Multiverse and the small cosmological constant

Ido Ben-Dayan, Merav Hadad, Amir Michaelis

Research output: Contribution to journalArticlepeer-review


We consider the Multiverse as an ensemble of universes. Using standard statistical physics analysis we get that the Cosmological Constant (CC) is exponentially small. The small and finite CC is achieved without any anthropic reasoning. We then quantize the CC. The quantization allows a precise summation of the possible contributions and using the measured value of the CC yields a prediction on the temperature of the Multiverse that we define. Furthermore, quantization allows the interpretation of a single Universe as a superposition of different eigenstates with different energy levels rather than the existence of an actual Multiverse.

Original languageEnglish
Article number052
JournalJournal of Cosmology and Astroparticle Physics
Issue number9
StatePublished - 1 Sep 2022

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  • dark energy theory
  • eternal universe
  • initial conditions


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