In this talk we propose to use the future detectionon-detection of tensor modes from inflation in CMB observations as a way to test certain features of string theory. Current limit on the ratio of tensor to scalar perturbations, r = T/S, is r ≤ 0.3, future detection may take place for r ≥ 10~(-2) - 10~(-3). I will argue that at present all known string theory inflation models predict tensor modes well below the level of detection. Therefore a possible experimental discovery of tensor modes may present a challenge to string cosmology.
展开▼
机译：在本次演讲中，我们建议使用将来从CMB观测中的膨胀中检测/不检测张量模式，作为检验弦论某些特征的方法。张量与标量摄动之比的当前限制r = T / S为r≤0.3，将来可能会发现r≥10〜（-2）-10〜（-3）。我将争辩说，目前所有已知的弦论膨胀模型都预测张量模式远低于检测水平。因此，张量模式的可能的实验发现可能给弦宇宙学带来挑战。
展开▼
