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arXiv 0904.0910hep-thhep-phmath-phmath.MP
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磁化膜中的费米子波函数:Theta恒等式和Yukawa耦合

Fermion Wavefunctions in Magnetized branes: Theta identities and Yukawa couplings

Ignatios Antoniadis, Alok Kumar, Binata Panda

摘要:

在磁化膜结构中,考虑到这种通量对于获得唯象可行模型的重要性,用斜通量(非对易)计算汤川耦合、确定超势以及凯勒度规是一个有趣的未解决问题。为了执行这一任务,费米子(标量)波函数的环面紧空间的一般通量,参数化的厄米矩阵的特征值的任意签名。我们还给出了明确的映射之间的费米子波函数,不同的内部手性的环面,交换的作用的通量分量的复杂结构的环面。通过计算波函数的重叠积分,我们给出了由任意一组膜(或它们的定向折叠像)产生的手征多重态之间的汤川耦合的表达式。该方法的基础是构造具有矩阵值模参数的一般Riemann theta函数的某些数学恒等式。我们简要地讨论了这个结果在我们在arXiv:0709.2799中提出的SU(5)GUT模型中的一个应用,即非手征费米子的质量产生。

英文摘要:

Computation of Yukawa couplings, determining superpotentials as well as the Kähler metric, with oblique (non-commuting) fluxes in magnetized brane constructions is an interesting unresolved issue, in view of the importance of such fluxes for obtaining phenomenologically viable models. In order to perform this task, fermion (scalar) wavefunctions on toroidally compactified spaces are presented for general fluxes, parameterized by Hermitian matrices with eigenvalues of arbitrary signatures. We also give explicit mappings among fermion wavefunctions, of different internal chiralities on the tori, which interchange the role of the flux components with the complex structure of the torus. By evaluating the overlap integral of the wavefunctions, we give the expressions for Yukawa couplings among chiral multiplets arising from an arbitrary set of branes (or their orientifold images). The method is based on constructing certain mathematical identities for general Riemann theta functions with matrix valued modular parameter. We briefly discuss an application of the result, for the mass generation of non-chiral fermions, in the SU(5) GUT model presented by us in arXiv:0709.2799.

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