2011/06/17 by Papadodimas, Kyriakos · 1 citation
#FOS: Physical sciences #High Energy Physics - Phenomenology (hep-ph) #High Energy Physics - Theory (hep-th)
paper · doi:10.48550/arxiv.1106.3556
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.