标题： 从高维得到的有效温伯格-萨拉姆模型 显示英文标题

标题： Effective Weinberg--Salam Model From Higher Dimensions

摘要： 我们考虑一个八维的引力理论，该理论具有主纤维丛结构，洛伦兹标量场与度规耦合。 其中一个起到希格斯场的作用，另一个起到稀释子场的作用。 有效宇宙学常数被解释为希格斯势。 杨-米尔斯耦合是人为引入的。 额外维度构成一个$SU(2)_{L} \times U(1)_{Y} \times SU(2)_{R}$群流形。 狄拉克场与从度规导出的势耦合。 结果，我们得到一个有效的四维理论，其中包含一个 温伯格-萨拉姆-格拉肖理论在弯曲时空中的所有耦合。 规范玻色子和前两代费米子的质量由理论给出。 显示英文摘要

摘要： We consider an 8--dimensional gravitational theory, which possesses a principle fiber bundle structure, with Lorentz--scalar fields coupled to the metric. One of them plays the role of a Higgs field and the other one that of a dilaton field. The effective cosmological constant is interpreted as a Higgs potential. The Yukawa couplings are introduce by hand. The extra dimensions constitute a $SU(2)_{L} \times U(1)_{Y} \times SU(2)_{R}$ group manifold. Dirac fields are coupled to the potentials derived from the metric. As result, we obtain an effective four--dimensional theory which contains all couplings of a Weinberg--Salam--Glashow theory in a curved space-time. The masses of the gauge bosons and of the first two fermion families are given by the theory.