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arXiv 2312.04517hep-th
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广义复几何中的D项

D-terms in Generalised Complex Geometry

Vincent Menet

AI总结:

本文将Tomasiello关于填充空间D膜BPS条件的无度规表述推广至非超对称背景,推导十维解约化为含非零F项和D项的四维N=1超引力所需约束,并以纯旋量给出运动方程。

摘要:

广义复几何为II型超引力弯曲解的N=1超对称条件提供了一种自然解释,即将其表述为内部流形上多形式的微分方程。用这种语言书写时,超对称条件对应于探测D膜的校准条件:根据其在非紧致四维空间中所张成的方向,分别为D弦、畴壁或填充空间的膜。Tomasiello已重新表述了与填充空间D膜校准相对应的BPS条件,消除了对度规的显式依赖。我们将这一推导推广到违反畴壁和D弦校准条件的非超对称背景情形。利用该重新表述,我们推导了带BPS填充空间源的十维解若要维数约化为具有非零F项且可能具有非零D项的四维N=1超引力解所必须遵守的约束。我们以纯旋量语言给出了满足这些约束的II型真空类别的运动方程。我们还研究了这些约束对于带BPS填充空间O5平面的IIB型SU(3)背景类别具有多强的限制性。

英文摘要:

Generalised Complex Geometry provides a natural interpretation of the $\mathcal{N}=1$ supersymmetry conditions for warped solutions of type II supergravity as differential equations on polyforms on the internal manifold. Written in this language the supersymmetry conditions correspond to calibration conditions for probe D-branes: D-string, domain-wall or space-filling branes, depending on the directions they span in the non-compact four-dimensional space. The BPS condition corresponding to the calibration of space-filling D-branes has been reformulated by Tomasiello, eliminating the explicit dependence on the metric. We generalise this derivation to the case of non-supersymmetric backgrounds violating the domain-wall and D-string calibration conditions. We use this reformulation to derive constraints that the ten-dimensional solutions with BPS space-filling sources must respect in order to dimensionally reduce to solutions of four-dimensional $\mathcal{N}=1$ supergravity with non-vanishing F-terms and potentially non-vanishing D-terms. We give the equations of motion for the class of type II vacua satisfying these constraints in the language of pure spinors. We investigate how restrictive these constraints are for the class of type IIB SU$(3)$ backgrounds with BPS space-filling O5-planes.

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