Implications of a positive cosmological constant for general relativity

DOI10.1088/1361-6633/AA7BB1arXiv1706.07482WikidataQ47710696 ScholiaQ47710696MaRDI QIDQ6288197

Publication date: 22 June 2017

Abstract: Most of the literature on general relativity over the last century assumes that the cosmological constant $Lambda$ is zero. However, by now independent observations have led to a consensus that the dynamics of the universe is best described by Einstein's equations with a small but positive $Lambda$. Interestingly, this requires a drastic revision of conceptual frameworks commonly used in general relativity, emph{no matter how small $Lambda$ is.} We first explain why, and then summarize the current status of generalizations of these frameworks to include a positive $Lambda$, focusing on gravitational waves.

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