T-duality and closed string non-commutative (doubled) geometry

T-duality and closed string non-commutative (doubled) geometry
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T-对偶性和闭弦非交换(双)几何

DOI:
10.1007/jhep12(2010)084
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发表时间:
2010
影响因子:
5.4
通讯作者:
D. Lüst
D. Lüst
中科院分区:
物理与天体物理2区
文献类型:
--
作者:
D. Lüst

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我们提供了一些证据表明,闭弦坐标将成为非交换转向几何通量和/或H场通量背景在闭弦紧化。这类似于具有B场和F场背景的D膜世界体积上的开弦非对易性。我们所研究的三维背景是扭曲环面(2-环面在圆上的纤维化)及其T-对偶H-场,3-形式通量背景(T-折叠)。空间的非交换性是由于环形Kähler resp的非平凡单值性而产生的。复结构模场,当沿沿着方向绕闭弦时。此外,我们研究了闭弦的非交换性的背景下,加倍的几何,我们认为,在一般情况下,一个非交换的闭弦背景是T-对偶的交换闭弦背景,反之亦然。我们还讨论了相应的空间不确定性关系。最后,在类比开弦边界条件,我们还认为,封闭弦动量和缠绕模式定义在某种意义上的D-膜在封闭弦加倍几何。
We provide some evidence that closed string coordinates will become non-commutative turning on geometrical fluxes and/or H-field flux background in closed string compactifications. This is in analogy to open string non-commutativity on the world volume of D-branes with B-and F-field background. The class of 3-dimensional backgrounds we are studying are twisted tori (fibrations of a 2-torus over a circle) and the their T-dual H-field, 3-form flux backgrounds (T-folds). The spatial non-commutativity arises due to the non-trivial monodromies of the toroidal Kähler resp. complex structure moduli fields, when going around the closed string along the circle direction. In addition we study closed string non-commutativity in the context of doubled geometry, where we argue that in general a non-commutative closed string background is T-dual to a commutative closed string background and vice versa. We also discuss the corresponding spatial uncertainty relations. Finally, in analogy to open string boundary conditions, we also argue that closed string momentum and winding modes define in some sense D-branes in closed string doubled geometry.
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