Physics – High Energy Physics – High Energy Physics - Theory
Scientific paper
2005-05-23
JHEP0604:033,2006
Physics
High Energy Physics
High Energy Physics - Theory
30 pages, 8 figures, LaTeX. v2: One more figure. References added, typos corrected
Scientific paper
10.1088/1126-6708/2006/04/033
The AdS/CFT correspondence between Sasaki-Einstein spaces and quiver gauge theories is studied from the perspective of massless BPS geodesics. The recently constructed toric Lpqr geometries are considered: we determine the dual superconformal quivers and the spectrum of BPS mesons. The conformal anomaly is compared with the volumes of the manifolds. The U(1)^2_F x U(1)_R global symmetry quantum numbers of the mesonic operators are successfully matched with the conserved momenta of the geodesics, providing a test of AdS/CFT duality. The correspondence between BPS mesons and geodesics allows to find new precise relations between the two sides of the duality. In particular the parameters that characterize the geometry are mapped directly to the parameters used for a-maximization in the field theory. The analysis simplifies for the special case of the Lpqq models, which are shown to correspond to the known "generalized conifolds". These geometries can break conformal invariance through toric deformations of the complex structure.
Benvenuti Sergio
Kruczenski Martin
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