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Why anthropic reasoning cannot predict Lambda.

Abstract:

We revisit anthropic arguments purporting to explain the measured value of the cosmological constant. We argue that different ways of assigning probabilities to candidate universes lead to totally different anthropic predictions. As an explicit example, we show that weighting different universes by the total number of possible observations leads to an extremely small probability for observing a value of Lambda equal to or greater than what we now measure. We conclude that anthropic reasoning ...

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Publication status:
Published

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Authors


Starkman, GD More by this author
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Institution:
University of Oxford
Department:
Oxford, MPLS, Physics, Astrophysics
Journal:
Physical review letters
Volume:
97
Issue:
20
Pages:
201301
Publication date:
2006-11-05
DOI:
EISSN:
1079-7114
ISSN:
0031-9007
URN:
uuid:c4d52a7d-df19-44a2-9fa5-843bcfc7150f
Source identifiers:
24123
Local pid:
pubs:24123
Language:
English

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