Phys. Rev. D 46, 2355–2361 (1992)Did the Universe have a beginning?Received 3 August 1992; published in the issue dated 15 September 1992 It is argued that ‘‘eternal inflation’’ must have a beginning in time. Conditions are formulated for a spacetime to describe an eternally inflating universe without a beginning, and it is shown that these conditions cannot be satisfied. A rigorous proof is given for a two-dimensional spacetime, and a plausibility argument for four dimensions. © 1992 The American Physical Society URL:
http://link.aps.org/doi/10.1103/PhysRevD.46.2355
DOI:
10.1103/PhysRevD.46.2355
PACS:
98.80.Bp
|
|
About | Terms and Conditions | Subscriptions | Search | Help
Use of the American Physical Society websites and journals implies that the user has read and agrees to our Terms and Conditions and any applicable Subscription Agreement. Physical Review®, Physical Review Letters®, Reviews of Modern Physics®, and Physical Review Special Topics® are trademarks of the American Physical Society.