Unified theories from fuzzy extra dimensions

Unified theories from fuzzy extra dimensions
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模糊额外维度的统一理论

DOI:
10.1002/prop.200410168
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发表时间:
2004
期刊:
Fortschritte der Physik
影响因子:
--
通讯作者:
G. Zoupanos
G. Zoupanos
中科院分区:
--
文献类型:
--
作者:
Paolo Aschieri;Paolo Aschieri;John Madore;P. Manousselis;G. Zoupanos;G. Zoupanos

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我们将联合收割机与陪集空间降维(CSDR)方法和非对易几何相结合并加以利用。我们考虑高维中定义的规范理论的降维,其中紧致方向是模糊空间(矩阵流形)。在CSDR中,我们假设时空的形式是MD = M4 × S / R,其中S / R是齐次空间。利用S / R的对称性,一个在MD上定义了规范群G的规范理论可以在维数上简洁地约化为M 4,特别地,所得到的四维规范是G的一个子群。在目前的工作中,我们证明了可以将CSDR思想应用于时空的紧致部分是齐次空间S / R的有限近似的情况,即模糊陪集。特别是我们研究的模糊球的情况下。
We combine and exploit ideas from Coset Space Dimensional Reduction (CSDR) methods and Non‐commutative Geometry. We consider the dimensional reduction of gauge theories defined in high dimensions where the compact directions are a fuzzy space (matrix manifold). In the CSDR one assumes that the form of space‐time is MD = M4 × S / R with S / R a homogeneous space. Then a gauge theory with gauge group G defined on MD can be dimensionally reduced to M4 in an elegant way using the symmetries of S / R, in particular the resulting four dimensional gauge is a subgroup of G. In the present work we show that one can apply the CSDR ideas in the case where the compact part of the space‐time is a finite approximation of the homogeneous space S / R, i.e. a fuzzy coset. In particular we study the fuzzy sphere case.