TY - JOUR
T1 - Implications of a positive cosmological constant for general relativity
AU - Ashtekar, Abhay
N1 - Publisher Copyright:
© 2017 IOP Publishing Ltd Printed in the UK.
PY - 2017/8/31
Y1 - 2017/8/31
N2 - 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.
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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U2 - 10.1088/1361-6633/aa7bb1
DO - 10.1088/1361-6633/aa7bb1
M3 - Review article
C2 - 28849776
AN - SCOPUS:85029575724
SN - 0034-4885
VL - 80
JO - Reports on Progress in Physics
JF - Reports on Progress in Physics
IS - 10
M1 - 102901
ER -