Nichtperturbative Stringdualität und D-branes in Calabi-Yau-Kompaktifizierungen

Calabi-Yau 紧致化中的非微扰弦对偶性和 D 膜

• 批准号: 5253222
• 负责人: Professor Dr. Volker Schomerus
• 金额: --
• 依托单位: Deutsches Elektronen-Synchrotron (DESY)
• 依托单位国家: 德国
• 项目类别: Priority Programmes
• 财政年份: 2000
• 资助国家: 德国
• 起止时间: 1999-12-31 至 2002-12-31
• 项目状态: 已结题
• 来源: https://gepris.dfg.de/gepris/projekt/5253222?language=en
• 关键词: Nichtperturbative; Stringdualit; und; branes; Calabi

Recent progress in understanding non-perturbative properties of string theory is based on the investigation of D-branes. For the analysis of D-branes on CY-manifolds ther are two approaches: while one has a geometric description as branes wrapping around holonomy cycles in the large-radius-limit, methods of boundary conformal field theory (CFT) can be employed to study D-branes at the Gepner points. In the past, we have done research in both areas. Investigations of their relation has just been started and the first results promise a number of novel and possibly unexpected insights into nonperturbative string dualities. Among these are various new checks of string dualities, which may involve non-BPS states. Applications include the study of marginal stability and other important issues of D-brane physics. Our methods include the theory of Calabi-Yauspaces, various techniques from 2D field theory and non-commutative geometry.

弦理论的非微扰性质的最新进展是基于对D-膜的研究。对于CY-流形上的D-膜的分析有两种方法：一种方法是将膜描述为在大半径极限下围绕完整循环的膜，另一种方法是边界共形场论（Boundary Conformal Field Theory，CFT）方法可以用来研究Gepner点上的D-膜。过去，我们在这两个领域都做过研究。对它们之间关系的研究才刚刚开始，第一批结果预示着对非微扰弦对偶的一些新颖的、可能是意想不到的见解。其中包括各种新的字符串对偶检查，可能涉及非BPS状态。应用包括边缘稳定性的研究和其他重要的D-膜物理问题。我们的方法包括理论的Calabi-Yauspaces，各种技术从二维场论和非交换几何。