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arXiv 1609.05904hep-th
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D3-brane模的降维

Dimensional Reduction for D3-brane Moduli

Brad Cownden, Andrew R. Frey, M. C. David Marsh, Bret Underwood

摘要:

弯曲弦紧化是许多试图稳定模量并将弦论与宇宙学和粒子唯象学现象学联系起来的尝试的核心。我们提出了一个第一性原理推导的低能4D有效理论从降维的D3-膜在一个翘曲的Calabi-Yau紧化的IIB型弦论与虚的自对偶3-形式通量,包括D3-膜运动的影响超出了探测近似,并找到了度规上的模空间的膜的位置,通用体积模量,和轴子下降的4-形式的潜力。由于D3-膜可以被认为是携带电或磁荷的自对偶5-形式的场强,我们目前的计算在这两个对偶框架。我们的结果是一致的,但显着扩展,较早的结果所产生的低能量有效理论的D3膜弦紧化。

英文摘要:

Warped string compactifications are central to many attempts to stabilize moduli and connect string theory with cosmology and particle phenomenology. We present a first-principles derivation of the low-energy 4D effective theory from dimensional reduction of a D3-brane in a warped Calabi-Yau compactification of type IIB string theory with imaginary self-dual 3-form flux, including effects of D3-brane motion beyond the probe approximation, and find the metric on the moduli space of brane positions, the universal volume modulus, and axions descending from the 4-form potential. As D3-branes may be considered as carrying either electric or magnetic charges for the self-dual 5-form field strength, we present calculations in both duality frames. Our results are consistent with, but extend significantly, earlier results on the low-energy effective theory arising from D3-branes in string compactifications.

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