Magnetic backgrounds and tachyonic instabilities in closed string theory
Magnetic backgrounds and tachyonic instabilities in closed string theory
复制标题
闭弦理论中的磁背景和快子不稳定性
DOI：
10.1063/1.1454381
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发表时间：
2001
期刊：
影响因子：
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通讯作者：
A. Tseytlin
中科院分区：
文献类型：
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作者：
A. Tseytlin
我们考虑梅尔文型磁背景中的闭合超弦。在NS-NS背景下，这些都是完全可解的弱耦合弦模型的频谱包含快子模式。磁场允许我们在费米子的周期和反周期边界条件下的自由超弦理论之间进行插值，特别是在0型和II型弦理论之间。利用“9-11”翻转，这种插值可以推广到M理论，并可用于研究0型弦理论中的快子凝聚问题。我们回顾了相关的对偶性建议，特别是，建议在弯曲的磁通量背景下，0型快子出现对应于d=11超重力波动谱中的一个状态的M-理论的0型理论的描述。
We consider closed superstrings in Melvin-type magnetic backgrounds. In the case of NS-NS backgrounds, these are exactly solvable as weakly coupled string models with spectrum containing tachyonic modes. Magnetic field allows one to interpolate between free superstring theories with periodic and antiperiodic boundary conditions for the fermions around some compact direction, and, in particular, between type 0 and type II string theories. Using “9–11” flip, this interpolation can be extended to M-theory and may be used to study the issue of tachyon condensation in type 0 string theory. We review related duality proposals, and, in particular, suggest a description of type 0 theory in terms of M-theory in a curved magnetic flux background in which the type 0 tachyon appears to correspond to a state in d=11 supergravity fluctuation spectrum.