Holonomy Spin Foam Models: Definition and Coarse Graining

Holonomy Spin Foam Models: Definition and Coarse Graining
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Holonomy 旋转泡沫模型:定义和粗粒化

DOI:
10.1103/physrevd.87.044048
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发表时间:
2012
期刊:
影响因子:
5
通讯作者:
W. Kamiński
W. Kamiński
中科院分区:
物理与天体物理2区
文献类型:
--
作者:
Benjamin Bahr;B. Dittrich;F. Hellmann;W. Kamiński

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我们提出了一种新的自旋泡沫的完整模型,这自然地扩展了格点规范理论的理论空间。这使得当前的自旋泡沫模型可以定义在任意的2-络合物上,并且可以将当前的自旋泡沫模型推广到任意的,特别是有限群。与标准格点规范理论的相似性使我们可以应用标准的粗粒化方法,这对于有限群来说现在可以很容易地用数值方法来考虑。我们将总结自旋泡沫和群场理论的其他完整和自旋网络公式,并解释不同的表示是如何通过配分函数中的变量变换而产生的。一篇配套的论文将描述边界希尔伯特空间以及编码在转移算子中的正则动力。
We propose a new holonomy formulation for spin foams, which naturally extends the theory space of lattice gauge theories. This allows current spin foam models to be defined on arbitrary 2-complexes as well as to generalize current spin foam models to arbitrary, in particular, finite groups. The similarity with standard lattice gauge theories allows us to apply standard coarse graining methods, which for finite groups can now be easily considered numerically. We will summarize other holonomy and spin network formulations of spin foams and group field theories and explain how the different representations arise through variable transformations in the partition function. A companion paper will provide a description of boundary Hilbert spaces as well as a canonical dynamic encoded in transfer operators.
4d 自旋泡沫模型的渐近
DOI: 10.1007/s10714-010-0983-7
发表时间: 2010
影响因子: 2.8
作者:
Barrett J
通讯作者: Barrett J