Colored Group Field Theory

Details Colored Group Field Theory Colored Group Field Theory

2009-07-15

arxiv.org/abs/0907.2582v1

Commun.Math.Phys.304:69-93,2011

Physics

High Energy Physics

High Energy Physics - Theory

Scientific paper

10.1007/s00220-011-1226-9

Group field theories are higher dimensional generalizations of matrix models. Their Feynman graphs are fat and in addition to vertices, edges and faces, they also contain higher dimensional cells, called bubbles. In this paper, we propose a new, fermionic Group Field Theory, posessing a color symmetry, and take the first steps in a systematic study of the topological properties of its graphs. Unlike its bosonic counterpart, the bubbles of the Feynman graphs of this theory are well defined and readily identified. We prove that this graphs are combinatorial cellular complexes. We define and study the cellular homology of this graphs. Furthermore we define a homotopy transformation appropriate to this graphs. Finally, the amplitude of the Feynman graphs is shown to be related to the fundamental group of the cellular complex.

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