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arXiv 0712.4245hep-th
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来自东方褶皱面的高能大质量弦散射

High-energy Massive String Scatterings from Orientifold Planes

Jen-Chi Lee, Yi Yang

摘要:

我们计算了在高能量,固定角度限制下,从Orientifold平面散射的任意质量水平的玻色子大质量闭弦态。对于O粒子散射,我们得到了不同弦态的高能散射振幅之间的无限线性关系。我们还证实了O粒子振幅的形状因子中只存在闭弦Regge极。对于O畴壁散射,我们发现,与著名的D瞬子散射一样,其振幅表现为场论散射,即不存在无穷Regge极点的UV幂律散射。此外,我们还发现在O畴壁散射的形状因子中只存在有限个T沟道闭弦极点,并且极点的质量受外腿质量的限制.因此,我们确认,所有的大质量封闭弦态耦合到O-域壁。

英文摘要:

We calculate bosonic massive closed string states at arbitrary mass levels scattered from Orientifold planes in the high-energy, fixed angle limit. For the case of O-particle scatterings, we obtain infinite linear relations among high-energy scattering amplitudes of different string states. We also confirm that there exist only closed string Regge poles in the form factor of the O-particle amplitudes as expected. For the case of O-domain-wall scatterings, we find that, like the well-known D-instanton scatterings, the amplitudes behave like field theory scatterings, namely UV power-law without infinite Regge poles. In addition, we discover that there exist only finite number of t-channel closed string poles in the form factor of O-domain-wall scatterings, and the masses of the poles are bounded by the masses of the external legs. We thus confirm that all massive closed string states do couple to the O-domain-wall.

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