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arXiv 1504.01586hep-thhep-ph
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标准模型费米子与K(E10)

Standard model fermions and K(E10)

Axel Kleinschmidt, Hermann Nicolai

摘要:

在最近的工作arXiv:1412.1715中,我们展示了如何修改盖尔曼的提议,通过变形在N=8超引力的SU(3)xU(1)驻点处的剩余U(1)对称性来实现电荷分配的一致性,从而用去除8个Goldstinos后剩余的最大SO(8)规范超引力的48个自旋1/2费米子来识别标准模型的48个夸克和轻子。在这封信中,我们表明,所需的变形,而不是在SU(8),不属于K(E10),“最大的紧凑”的子群E10这是一个可能的候选对称性的基础M理论。双曲型的无限维Kac-Moody对称性的引入,显然是当前方案工作所不可避免的,为将标准模型物理学嵌入到量子引力的普朗克尺度理论中开辟了全新的视角。

英文摘要:

In recent work arXiv:1412.1715 it was shown how to modify Gell-Mann's proposal for identifying the 48 quarks and leptons of the Standard Model with the 48 spin-1/2 fermions of maximal SO(8) gauged supergravity that remain after the removal of eight Goldstinos, by deforming the residual U(1) symmetry at the SU(3)xU(1) stationary point of N=8 supergravity to also achieve agreement of the electric charge assignments. In this Letter we show that the required deformation, while not in SU(8), does belong to K(E10), the `maximal compact' subgroup of E10 which is a possible candidate symmetry underlying M theory. The incorporation of infinite-dimensional Kac-Moody symmetries of hyperbolic type, apparently unavoidable for the present scheme to work, opens up completely new perspectives on embedding Standard Model physics into a Planck scale theory of quantum gravity.

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