English

An Infrared Divergence Problem in the cosmological measure theory and the anthropic reasoning

Cosmology and Nongalactic Astrophysics 2015-05-27 v3 General Relativity and Quantum Cosmology High Energy Physics - Theory

Abstract

An anthropic principle has made it possible to answer the difficult question of why the observable value of cosmological constant (Λ1047\Lambda\sim 10^{-47} GeV4{}^4) is so disconcertingly tiny compared to predicted value of vacuum energy density ρSUSY1012\rho_{SUSY}\sim 10^{12} GeV4{}^4. Unfortunately, there is a darker side to this argument, as it consequently leads to another absurd prediction: that the probability to observe the value Λ=0\Lambda=0 for randomly selected observer exactly equals to 1. We'll call this controversy an infrared divergence problem. It is shown that the IRD prediction can be avoided with the help of a Linde-Vanchurin {\em singular runaway measure} coupled with the calculation of relative Bayesian probabilities by the means of the {\em doomsday argument}. Moreover, it is shown that while the IRD problem occurs for the {\em prediction stage} of value of Λ\Lambda, it disappears at the {\em explanatory stage} when Λ\Lambda has already been measured by the observer.

Keywords

Cite

@article{arxiv.1102.0320,
  title  = {An Infrared Divergence Problem in the cosmological measure theory and the anthropic reasoning},
  author = {Artyom V. Yurov and Valerian A. Yurov and Artyom V. Astashenok and Andrei A. Shpilevoi},
  journal= {arXiv preprint arXiv:1102.0320},
  year   = {2015}
}

Comments

9 pages, RevTex