Low-Energy Theorems from Holography

Details Low-Energy Theorems from Holography Low-Energy Theorems from Holography

2011-01-08

arxiv.org/abs/1101.1586v3

JHEP 1103:044,2011

Physics

High Energy Physics

High Energy Physics - Theory

32 pages, 4 figures, two references added, typos removed

Scientific paper

10.1007/JHEP03(2011)044

In the context of gauge/gravity duality, we verify two types of gauge theory low-energy theorems, the dilation Ward identities and the decoupling of heavy flavor. First, we provide an analytic proof of non-trivial dilation Ward identities for a theory holographically dual to a background with gluon condensate (the self-dual Liu--Tseytlin background). In this way an important class of low-energy theorems for correlators of different operators with the trace of the energy-momentum tensor is established, which so far has been studied in field theory only. Another low-energy relationship, the so-called decoupling theorem, is numerically shown to hold universally in three holographic models involving both the quark and the gluon condensate. We show this by comparing the ratio of the quark and gluon condensates in three different examples of gravity backgrounds with non-trivial dilaton flow. As a by-product of our study, we also obtain gauge field condensate contributions to meson transport coefficients.

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