AdS/CFT and the cosmological constant problem

Details AdS/CFT and the cosmological constant problem AdS/CFT and the cosmological constant problem

2011-06-17

arxiv.org/abs/1106.3556v1

Physics

High Energy Physics

High Energy Physics - Theory

38 pages

Scientific paper

Within the context of the AdS/CFT correspondence we attempt to formulate the cosmological constant problem in the dual conformal field theory. The fine-tuning of the bulk cosmological constant is related to an apparent fine-tuning in the effective description of the CFT in terms of its light operators: while the correlators of single particle operators satisfy a large N expansion, the expansion does not appear to be natural. Individual terms contributing to correlators have parametrically larger value than the one dictated by large N counting. The final 1/N suppression of correlators is achieved via delicate cancellations between such terms. We speculate on the existence of underlying principles which might make the bulk theory (secretly) natural.

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