Implications of a positive cosmological constant for general relativity

Research output: Contribution to journalReview article

8 Citations (Scopus)

Abstract

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
Volume80
Issue number10
DOIs
StatePublished - Aug 31 2017

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relativity
gravitational waves
universe

All Science Journal Classification (ASJC) codes

  • Physics and Astronomy(all)

Cite this

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Implications of a positive cosmological constant for general relativity. / Ashtekar, Abhay.

In: Reports on Progress in Physics, Vol. 80, No. 10, 102901, 31.08.2017.

Research output: Contribution to journalReview article

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AB - 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.

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