Complex marginal deformations of D3-brane geometries, their Penrose limits and giant gravitons

Abstract

We apply the Lunin--Maldacena construction of gravity duals to beta-deformed gauge theories to a class of Type IIB backgrounds with U(1)^3 global symmetry, which include the multicenter D3-brane backgrounds dual to the Coulomb branch of N=4 super Yang-Mills and the rotating D3-brane backgrounds dual to the theory at finite temperature and chemical potential. After a general discussion, we present the full form of the deformed metrics for three special cases, which can be used for the study of various aspects of the marginally-deformed gauge theories. We also construct the Penrose limits of the solutions dual to the Coulomb branch along a certain set of geodesics and, for the resulting PP--wave metrics, we examine the effect of beta-deformations on the giant graviton states. We find that giant gravitons exist only up to a critical value of the sigma-deformation parameter, are not degenerate in energy with the point graviton, and remain perturbatively stable. Finally, we probe the sigma-deformed multicenter solutions by examining the static heavy-quark potential by means of Wilson loops. We find situations that give rise to complete screening as well as linear confinement, with the latter arising is an intriguing way reminiscent of phase transitions in statistical systems.

53 pages, 5 figures; v3: version to appear in Nucl. Phys. B

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• Holographic flavor in N=4 gauge theories in 3d from wrapped branes
• Deformations of Holographic Duals to Non-Relativistic CFTs
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• Unquenched flavor in the gauge/gravity correspondence
• Gravity dual of a multilayer system
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• Giant Gravitons in the Schrodinger holography
• $\beta$-deformation on a slanted torus and deformed pp-wave
• On the Stability of Non-Extremal Conifold Backgrounds with Sources
• Generalized complex marginal deformation of pp-waves and giant gravitons