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arXiv 1108.4889math-phhep-thmath.MPmath.OA
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边界量子场论中与格和圈群模型相关的模型

Models in Boundary Quantum Field Theory Associated with Lattices and Loop Group Models

Marcel Bischoff

摘要:

本文给出边界量子场论中模型的新例子,即冯·诺依曼代数的局部时移协变网,它是利用Longo和Witten最近的一种构造,即利用实直线上的局部共形网A和与A相联系的酉半群的一个元素。也就是说,我们计算这个半群的元素来自于一个(完全有理的)共形网族的Hölder连续对称内函数,该共形网可以通过从实子空间的网开始,传递到其第二量子化网并对前者进行局部扩展来获得。这个族正是与格相关联的共形网族,正如我们所展示的,它包含了单连通单缀群的第一级环群网作为特例。进一步的例子来自于Spin(n)在第2层使用orbifold构造的循环群网。

英文摘要:

In this article we give new examples of models in boundary quantum field theory, i.e. local time-translation covariant nets of von Neumann algebras, using a recent construction of Longo and Witten, which uses a local conformal net A on the real line together with an element of a unitary semigroup associated with A. Namely, we compute elements of this semigroup coming from Hölder continuous symmetric inner functions for a family of (completely rational) conformal nets which can be obtained by starting with nets of real subspaces, passing to its second quantization nets and taking local extensions of the former. This family is precisely the family of conformal nets associated with lattices, which as we show contains as a special case the level 1 loop group nets of simply connected, simply laced groups. Further examples come from the loop group net of Spin(n) at level 2 using the orbifold construction.

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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