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arXiv 0908.2034hep-th
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小杂种优势串

Little heterotic strings

Alon E. Faraggi, Elisa Manno

摘要:

我们讨论了E8XE8杂化弦的环形轨道折叠,其中自由费米子希格斯物质分裂是通过与规范自由度的费米子数耦合的内部晶格的移位来实现的。我们考虑的模型中,一些选择的轨道的结果在投影的引力子。在我们考虑的模型中,投影也会导致有质量弦谱中自旋统计分配的翻转,而无质量弦谱保留了传统的自旋统计分配。我们认为,配分函数是数学上一致的单圈和多圈振幅,由于超对称性的存在,在频谱。简要讨论了非零温度下不同模型之间的对偶性。

英文摘要:

We discuss toroidal orbifolds of the E8XE8 heterotic string, in which the free fermionic Higgs-matter splitting is implemented by a shift in the internal lattice coupled with the fermion numbers of the gauge degrees of freedom. We consider models in which some choices of the orbifold result in the projection of the graviton. In the models that we consider the projection also results in flipping the spin-statistics assignments in the massive string spectrum, whereas the massless spectrum retains the conventional spin-statistics assignments. We argue that the partition functions are mathematically consistent for one- and multi-loop amplitudes, owning to the existence of supersymmetry in the spectrum. A duality between different models at nonzero temperature is briefly discussed.

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