论文标题
非扰动$ O（d，d）$ de-sitter时空的稳定性。各向同性情况
Stability of the non-perturbative $O(D,D)$ de-Sitter spacetime. The isotropic case
论文作者
论文摘要
近年来，弦乐理论社区中的中心研究问题之一成为弦乐理论中的DE点解决方案的存在及其在弦理论中的稳定性。所谓的De-sitter猜想指出，在字符串理论中，De-Sitter真空不稳定。在这里，我们使用$ o（d，d）$对称方法研究字符串理论中的DE-sitter解决方案及其在时间方向上的稳定性，允许计算字符串理论有效动作的通用形式。我们研究了恒定广义Dilaton以及Dilaton耦合的一般形式的尚未讨论的情况。我们的发现表明，对于有或没有物质的恒定广义DILATON而言，除外的解决方案都是不稳定的。此外，我们发现，为了使理论弱耦合，Dilaton耦合的一般形式是宇宙常数的形式。
The existence of de-Sitter solutions and their stability within string theory became, in recent years, one of the central research questions within the string theory community. The so-called de-Sitter conjecture states that the de-Sitter vacua are unstable within string theory. Here, we study the de-Sitter solutions in string theory and their stability in the time direction using the $O(d,d)$ symmetry approach allowing for the calculation of the generic form of the string theory effective action. We study the undiscussed case of the constant generalized dilaton as well as the general form of dilaton couplings. Our findings suggest that de-Sitter solutions are unstable for the constant generalized dilaton both with and without matter. Furthermore, we found that in order for the theory to be weakly coupled the general form of dilaton coupling is in the form of a cosmological constant.
