Symmetry Breaking Bulk Effects in Local D-brane Models

Details Symmetry Breaking Bulk Effects in Local D-brane Models Symmetry Breaking Bulk Effects in Local D-brane Models

2011-11-13

arxiv.org/abs/1111.3047v2

Physics

High Energy Physics

High Energy Physics - Theory

13 pages, 1 figure; v2 typos removed

Scientific paper

We study symmetry breaking effects in local D-brane models that arise as a result of compactification, taking models constructed on C^3/Z_3 as prototype. Zero-modes of the Lichnerowicz operator in cone-like geometries have a power law behaviour; thus the leading symmetry breaking effects are captured by the modes with the lowest scaling dimension which transform non-trivially under the isometry group. Combining this with the fact that global symmetries in local models are gauged upon compactification we determine the strength and form of the leading operators responsible for the symmetry breaking. We find a hierarchical separation in the size of symmetry breaking parameters.

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