Universal ratio as lower bound

Details Universal ratio as lower bound Universal ratio as lower bound

2008-04-04

arxiv.org/abs/0804.0779v1

Physics

High Energy Physics

High Energy Physics - Theory

7 pages, 1 figure, revtex4

Scientific paper

We refine the definition of universal ratio c/\tilde{c} obtained via AdS/CFT correspondence as shown in arXiv:0801.2785 [hep-th], denoted as \gamma_c, and apply it to non-CFTs whose dual gravitational theory have metric of asymptotic AdS. We conjecture that \gamma_c=1 is the lower bound being saturated at high temperature regime and serves as an ordering parameter as energy scale varies. We test this conjecture with the hard wall AdS/QCD toy model and N=2* Pilch-Warner solution and find the agreement. At last, we make a connection with the C-Theorem and prove this conjecture in a general holographic background with multi-kink geometry.

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