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26 April 2024 |
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Probabilities in the Arkani-Hamed-Dimopolous-Kachru landscape | | Delia Schwartz-Perlov
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22 Nov 2006 | | Abstract: | In a previous paper we found that in the context of the string theory ``discretuum’’ proposed by Bousso and Polchinski, the cosmological constant probability distribution varies wildly. However, the successful anthropic predictions of the cosmological constant depend crucially on the assumption of a flat prior distribution. We conjectured that the staggered character of our Bousso-Polchinski distribution will arise in any landscape model which generates a dense spectrum of low-energy constants from a wide distribution of states in the parameter space of the fundamental theory. Here we calculate the volume distribution for $Lambda$ in the simpler Arkani-Hamed-Dimopolous-Kachru landscape model, and indeed this conjecture is borne out. | | Source: | arXiv, hep-th/0611237 | | Services: | Forum | Review | PDF | Favorites | |
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