Implications of a positive cosmological constant for general relativity

Abhay Ashtekar

Research output: Contribution to journalReview articlepeer-review

30 Scopus citations


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

Original languageEnglish (US)
Article number102901
JournalReports on Progress in Physics
Issue number10
StatePublished - Aug 31 2017

All Science Journal Classification (ASJC) codes

  • General Physics and Astronomy


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