arXivDaily arXiv每日学术速递 周一至周五更新
arXiv 0705.2440gr-qc
收藏

几何的量子结构:圈与模糊?

Quantum Structure of Geometry: Loopy and fuzzy?

Alejandro Corichi, Jose A. Zapata

摘要:

在任何建立引力量子理论的尝试中,一个核心问题是在最小尺度上解开时空结构。特别相关的是可能的定义内的理论和研究其代数性质的协调功能,如非交换性。在这里,我们从圈量子引力的角度和形式主义提供的量子几何图像来处理这个问题。特别是,正如我们在这里所讨论的,这个新兴的图像有两个主要元素:i)普朗克尺度下的量子几何的性质是一维的,具有量子化几何量的聚合; ii)通过内在的,关系的,结构的方式与坐标相对应的适当定义的算子变得不可交换。算子的这一特殊特征,即在操作上使空间上的点局部化,产生了一种新兴的几何学,在精确的意义上,这种几何学也是模糊的。

英文摘要:

In any attempt to build a quantum theory of gravity, a central issue is to unravel the structure of space-time at the smallest scale. Of particular relevance is the possible definition of coordinate functions within the theory and the study of their algebraic properties, such as non-commutativity. Here we approach this issue from the perspective of loop quantum gravity and the picture of quantum geometry that the formalism offers. In particular, as we argue here, this emerging picture has two main elements: i) The nature of the quantum geometry at Planck scale is one-dimensional, polymeric with quantized geometrical quantities and; ii) Appropriately defined operators corresponding to coordinates by means of intrinsic, relational, constructions become non-commuting. This particular feature of the operators, that operationally localize points on space, gives rise to an emerging geometry that is also, in a precise sense, fuzzy.

机构、总结、中文摘要均由AI分析而来,可能存在错误,请以论文正文为准。

↑