Space-Time Properties in String Theory

全息术是最难定量理解的概念之一，因为它与引力理论的量子化密切相关。弦理论的最新进展表明，它是一个可以在引力理论和非引力理论之间的对偶中实现的概念。 PI建议研究偏振平面波（PP）背景中的弦。 PI提出要研究在pp波背景下，大R荷算符在“动量”空间中的相关函数与弦论（或超引力）中的物体之间的关系。PI还希望研究巨引力子的性质以及对弦不相容原理的影响。最后，PI打算研究如何在膜上的非对易规范理论耦合到线性超引力背景。

Holography is one of the most difficult concepts to understand in a quantitative manner, as it is intimately tied to the quantization of gravitational theories. Recent advances in string theory have shown that it is a concept that can be realized in dualities between gravitational theories and non-gravitational theories. The PI proposes to study Strings in polarized plane wave (PP) backgrounds. The PI proposes to examine the relationship of the correlation functions of large R-charge operators in "momentum" space to objects in the string theory (or supergravity) in the pp wave background. The PI also wishes to investigate properties of giant gravitons and the implications for the stringy exclusion principle. Finally the PI intends to investigate how noncommutative gauge theories living on a brane couple to linearized supergravity backgrounds.