The Cosmological Constant Problem
The Cosmological Constant Problem
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DOI：
10.1142/s0218271892000069
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发表时间：
1992
影响因子：
2.2
通讯作者：
Tony Padilla
中科院分区：
文献类型：
--
作者：
Tony Padilla
宇宙学常数是控制宇宙大尺度结构的宏观参数。迄今为止的所有观察都表明它非常小。然而，我们现代粒子物理学和引力的微观理论表明，宇宙常数应该非常大。理论预期与经验观察之间的这种差异构成了宇宙学常数问题。在回顾问题的基础上，简要讨论了解决问题的一些方法，并提出了一种可能的解决方案。在这种方法中，宇宙学常数表现为积分常数，与拉格朗日量中的任何参数无关。这个解决方案关键地利用了量子力学。
The cosmological constant is a macroscopic parameter which controls the large-scale structure of the Universe. All observations to date have shown that it is very small. However, our modern microscopic theory of particle physics and gravity suggests that the cosmological constant should be very large. This discrepancy between theoretical expectation and empirical observation constitutes the cosmological constant problem. After a review of the problem, some approaches to its solution are briefly discussed, and then a possible solution is proposed. In this approach, the cosmological constant appears as a constant of integration, unrelated to any parameters in the Lagrangian. The solution makes crucial use of quantum mechanics.