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arXiv 0907.2582hep-thmath-phmath.MP
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色群场论

Colored Group Field Theory

Razvan Gurau

摘要:

群场论是矩阵模型的高维推广。它们的费曼图很胖,除了顶点、边和面之外,它们还包含更高维的细胞,称为气泡。本文提出了一种新的具有色对称性的费米子群场论,并对其图的拓扑性质进行了系统的研究。与玻色子对应物不同,这个理论的费曼图的气泡被很好地定义,并且很容易识别。我们证明了这些图是组合胞腔复形。我们定义并研究了这类图的胞腔同调。此外,我们定义了一个同伦变换适当的这类图。最后,费曼图的振幅被证明是有关的基本组的细胞复杂。

英文摘要:

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.

机构、总结、中文摘要均由AI分析而来,可能存在错误,请以论文正文为准。

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