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arXiv 1903.04769hep-thmath-phmath.MP
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关于非对易几何中费米子加倍问题Barrett解的唯一性

On the uniqueness of Barrett's solution to the fermion doubling problem in Noncommutative Geometry

Fabien Besnard

摘要:

2006年Barrett以费米子场的Majorana-Weyl条件的形式给出了Connes非对易标准模型中所谓的费米子加倍问题的一个解。这些条件定义了一个具有正确物理维数的${\cal U}_{J,χ}$不变子空间,其中${\cal U}_{J,χ}$是与手征性和实结构交换的Krein酉群.它们要求总三元组的KO维数为$0$。在本文中,我们表明,这个解决方案是,到一些微不足道的修改,并根据一些温和的假设下,有限的三倍,唯一一个具有这种不变性。我们还观察到,一个简单的修改的费米子作用可以作为一个替代的物理子空间上的显式投影。

英文摘要:

A solution of the so-called fermion doubling problem in Connes' Noncommutative Standard Model has been given by Barrett in 2006 in the form of Majorana-Weyl conditions on the fermionic field. These conditions define a ${\cal U}_{J,χ}$-invariant subspace of the correct physical dimension, where ${\cal U}_{J,χ}$ is the group of Krein unitaries commuting with the chirality and real structure. They require the KO-dimension of the total triple to be $0$. In this paper we show that this solution is, up to some trivial modifications, and under some mild assumptions on the finite triple, the only one with this invariance property. We also observe that a simple modification of the fermionic action can act as a substitute for the explicit projection on the physical subspace.

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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