Low-energy effective action of compactified type-II superstrings and M-theory

在四维N=2的有效超引力的超多重态扇区中，详细研究了紧化在Calabi-Yau流形上的II型超弦（和M理论）的低能有效驱动.新的结果，描述了经典（从超弦理论），微扰（从单圈超弦微扰理论），和非微扰（由于D-瞬子）的修正，已获得的主要研究者在参考文献。[1.2，4]。与自发超对称破缺有关的Goldstino作用量的新的精确形式在参考文献[1]中导出。[3]的文件。非零引力光子背景导致四维超空间中的有效非反对易性，其对低能有效作用量的影响已在文献[1]中计算到引力光子场中的所有阶。[[5在基本粒子物理学中，对相交D-膜组态，以及相关的轨道折叠/定向折叠紧化，味结构，味结构，Yukawa耦合结构和耦合选择定则进行了唯象预言. [9、10]。

The low-energy effective actuion of type-II superstrings (and of M-theory) compactifled on a Calabi-Yau manifold Was investigated in detail, in the hypermultiplet sector of the effective four-dimensional N=2 supergravity. The new results, describing both classical (from superstring theory), perturbative (from one-loop superstring perturbation theory), and non-pertuirbative (due to D-instantons) corrections, have been obtained by the principal investigator in refs.[1.2,4]. The new exact form of the goldstino action, associated with spontaneous supersymmetry breaking, was derived in ref.[3]. A non-vanishing gravi-photon background results in the effective non-anti-commutativity in the four-dimensional Superspace, whose implications for the low-energy effective action have been calculated to all orders in the gravi-photon field in refs.[[5,6,7,8].The phenomenological predictions (in elementary particles physics) of the intersecting D-brane configurations, as Well as that of the related orbifold/orientifold compactifications, for the flavour structure, the for the flavour structure, The Yukawa coupling structutre and the coupling selection rule, were found in refs.[9,10].