Hatefi Ehsan
1Institute for Theoretical Physics, TU Wien, Wiedner Hauptstrasse 8-10/136, 1040 Vienna, Austria.
2Faculty of Physics, University of Warsaw, ul. Pasteura 5, 02-093 Warsaw, Poland.
Eur Phys J C Part Fields. 2018;78(5):383. doi: 10.1140/epjc/s10052-018-5868-z. Epub 2018 May 17.
We discuss some physical prospective of the non-BPS effective actions of type IIA and IIB superstring theories. By dealing with all complete three and four point functions, including a closed Ramond-Ramond string (in terms of both its field strength and its potential), gauge (scalar) fields as well as a real tachyon and under symmetry structures, we find various restricted world volume and bulk Bianchi identities. The complete forms of the non-BPS scattering amplitudes including their Chan-Paton factors are elaborated. All the singularity structures of the non-BPS amplitudes, their all order higher-derivative corrections, their contact terms and various modified Bianchi identities are derived. Finally, we show that scattering amplitudes computed in different super-ghost pictures are compatible when suitable Bianchi identities are imposed on the Ramond-Ramond fields. Moreover, we argue that the higher-derivative expansion in powers of the momenta of the tachyon is universal.
我们讨论了IIA型和IIB型超弦理论的非BPS有效作用量的一些物理前景。通过处理所有完整的三点和四点函数，包括闭弦拉蒙德 - 拉蒙德弦（就其场强和势而言）、规范（标量）场以及实快子，并在对称结构下，我们找到了各种受限的世界面和体空间比安基恒等式。详细阐述了包括陈 - 帕顿因子在内的非BPS散射振幅的完整形式。推导了非BPS振幅的所有奇点结构、它们的所有阶次的高阶导数修正、它们的接触项以及各种修正的比安基恒等式。最后，我们表明，当对拉蒙德 - 拉蒙德场施加适当的比安基恒等式时，在不同超鬼图中计算的散射振幅是兼容的。此外，我们认为快子动量幂次的高阶导数展开是通用的。
