Open AccessString cosmology and the landscape
Author(s) -
Iosif Bena,
Mariana Graña
Publication year - 2017
Publication title -
comptes rendus physique
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.984
H-Index - 73
eISSN - 1878-1535
pISSN - 1631-0705
DOI - 10.1016/j.crhy.2017.04.001
Subject(s) - physics , cosmology , cosmological constant , string (physics) , theoretical physics , flatness (cosmology) , philosophy , universe , humanities , mathematical physics , quantum mechanics
International audienceString Theory is believed to have a landscape of 10 500 vacua with properties that resemble those of our Universe. The existence of these vacua can be combined with anthropic reasoning to explain some of the hardest problems in cosmology and high-energy physics: the cosmological constant problem, the hierarchy problem, and the un-natural almost-flatness of the inflationary potential. We will explain the construction of these vacua, focusing on the challenges of obtaining vacua with a positive cosmological constant
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