Geometry and topology of bubble solutions from gauge theory

Details Geometry and topology of bubble solutions from gauge theory Geometry and topology of bubble solutions from gauge theory

2007-03-08

arxiv.org/abs/hep-th/0703068v2

Phys.Rev.D76:026003,2007

Physics

High Energy Physics

High Energy Physics - Theory

21 pages, 2 figures. v2: references added, typos corrected

Scientific paper

10.1103/PhysRevD.76.026003

We study how geometrical and topological aspects of certain 1/2 BPS type IIB supergravity solutions are captured by the N=4 Super Yang-Mills gauge theory in the AdS/CFT context. The type IIB solutions are completely characterized by arbitrary droplets in a plane and we consider, in particular, concentric droplets. We probe the dual 1/2 BPS operators of the gauge theory with single traces and extract their one-loop anomalous dimensions. The action of the one-loop dilatation operator can be reformulated as the Hamiltonian of a bosonic lattice. The operators defining the Hamiltonian encode the topology of the droplet. The axial symmetry of the droplets turns out to be essential for obtaining the spectrum of the Hamiltonians. In appropriate BMN limits, the near-BPS spectrum reproduces the spectrum of near-BPS string excitations propagating along each individual edge of the droplet of the dual geometric background. We also study semiclassical regimes for the Hamiltonians. We show that for droplets having disconnected constituents, the Hamiltonian admits different complimentary semiclassical descriptions, each one replicating the semiclassical description for closed strings extending in each of the constituents.

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