论文标题
新循环量子宇宙学模型中的能源条件
Energy conditions in new model of loop quantum cosmology
论文作者
论文摘要
最近，在新的环量子宇宙学模型中发现了一个De-Sitter时期，该模型受欧几里得和洛伦兹术语的标量约束约束。新的LQC模型和新兴宇宙学中的无奇异性反弹强烈表明，量子校正引起的有效应力张量必须违反标准能量条件。在本文中，我们进行了明确的计算，以分析特定代表性能量条件的行为，即平均空，强和占主导地位的能量条件。事实证明，仅在弹跳点附近的一段时间内侵犯了平均无效状况，而主要的能量条件则违反。更具体地说，强大的能量条件不仅在弹跳点附近违反，而且还违反了从弹跳点到与DE Sitter时期相对应的经典阶段的整个时期。预计我们的结果将在虫洞和时间机的构建方面散发出一些灯光，通常需要异国情调会违反能源条件。
Recently, a de-Sitter epoch has been found in the new model of loop quantum cosmology which is governed by the scalar constraint with both of Euclidean and Lorentz terms. The singularity free bounce in the new LQC model and the emergent cosmology constant strongly suggest that the effective stress energy tensor induced by quantum corrections must violate the standard energy conditions. In this paper, we do an explicit calculation to analyze the behaviours of specific representative energy conditions, i.e., average null, strong and dominant energy conditions. It turns out that the averaging null energy condition is violated while the dominant energy condition is violated only at a period around the bounce point. More specifically, the strong energy condition is violated not only at a period around the bounce point, but also the whole period from the bounce point to the classical phase corresponding to the de Sitter period. Our results is expected to shed some lights on construction of the wormhole and time machine which usually need exotic matters violate energy conditions.
