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A note on string excitations and the Higuchi bound

机译:关于弦激励和Hi口界的说明

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In this brief note we consider the interaction between high spin excitations in string theory along the Regge trajectory and the Higuchi bound in de Sitter space. There is always a point along the Regge trajectory where the Higuchi bound is violated. However, this point precisely coincides with a string whose length is of order the de Sitter Hubble scale. String theory therefore manifests no immediate inconsistency as long as the string scaleMsis above the Hubble scaleH. However, an implication is that the Regge trajectory must be significantly modified at some ultraviolet scale. Insisting that this modification should occur no earlier than the Planck scale would lead to a bound on the string scale ofMs>HMp.
机译:在此简短说明中,我们考虑了弦理论中沿Regge轨迹的高自旋激发与de Sitter空间中的Higuchi界之间的相互作用。沿着Regge轨迹总是存在一个违反Higuchi界线的点。但是,这一点恰好与长度为de Sitter Hubble标度的字符串重合。因此,只要弦标度Msis高于哈勃标度H,弦论就不会立即出现矛盾。但是,这意味着必须在某些紫外线范围内显着修改Regge轨迹。坚持认为这种修改不应早于普朗克尺度发生,将导致弦尺度Ms> HMp受到限制。

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