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arXiv 1309.4445hep-thgr-qc
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全统一模型中引力的精确时空规范对称性及其耦合和近似内对称性

Exact Space-Time Gauge Symmetry of Gravity, Its Couplings and Approximate Internal Symmetries in a Total-Unified Model

Jong-Ping Hsu

摘要:

引力场是时空平移($T_4$)规范对称性的表现,它使引力相互作用与强相互作用和电弱相互作用统一起来。这样一个完全统一的模型是基于平坦时空中的广义杨-米尔斯框架。根据Glashow-Salam-Ward-Weinberg的思想,我们对群$T_4 \times (SU_3)_{color} \times SU_2 \times U_1\times U_{1b}$进行了等基规范,从而得到了全统一规范协变导数${\bf \d}_μ = \p_μ - igϕ_μ^ν p_ν+ig_{s}{G_μ^{a}}(\ld^a/2) +if{W_μ^{k}}{t^k} + if' U_μt_{o} + ig_{b}B_μ$ .外部$T_4$群的生成元具有表示$p_μ=i\p_μ$,它不同于所有内部群的其他生成元,后者具有常数矩阵表示。结果表明:(a)所有的内部$(SU_3)_{color}, SU_2, U_1$和重子$U_{1b}$规范对称性由于引力相互作用都有极小的破坏。(b)$T_4$的规范对称性仍然是精确的,并且决定了引力子的万有耦合。(c)这种对内部规范对称性的引力破坏导致了修正的程函方程和Hamilton-Jacobi型方程,它们是在几何光学极限下得到的,并且包含了有效的黎曼度规张量。(d)得到了光子-引力子、胶子-引力子和夸克-加维子新耦合的费曼图规则。

英文摘要:

Gravitational field is the manifestation of space-time translational ($T_4$) gauge symmetry, which enables gravitational interaction to be unified with the strong and the electroweak interactions. Such a total-unified model is based on a generalized Yang-Mills framework in flat space-time. Following the idea of Glashow-Salam-Ward-Weinberg, we gauge the groups $T_4 \times (SU_3)_{color} \times SU_2 \times U_1\times U_{1b}$ on equal-footing, so that we have the total-unified gauge covariant derivative ${\bf \d}_μ = \p_μ - igϕ_μ^ν p_ν+ig_{s}{G_μ^{a}}(\ld^a/2) +if{W_μ^{k}}{t^k} + if' U_μt_{o} + ig_{b}B_μ$. The generators of the external $T_4$ group have the representation $p_μ=i\p_μ$, which differs from other generators of all internal groups, which have constant matrix representations. Consequently, the total-unified model leads to the following new results: (a) All internal $(SU_3)_{color}, SU_2, U_1$ and baryonic $U_{1b}$ gauge symmetries have extremely small violations due to the gravitational interaction. (b) The $T_4$ gauge symmetry remains exact and dictates the universal coupling of gravitons. (c) Such a gravitational violation of internal gauge symmetries leads to modified eikonal and Hamilton-Jacobi type equations, which are obtained in the geometric-optics limit and involve effective Riemann metric tensors. (d) The rules for Feynman diagrams involving new couplings of photon-graviton, gluon-graviton and quark-gaviton are obtained.

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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