Phys. Rev. Lett. 72, 3305–3308 (1994)Eternal inflation and the initial singularityReceived 28 October 1993; published in the issue dated 23 May 1994 It is shown that a physically reasonable spacetime that is eternally inflating to the future must possess an initial singularity. © 1994 The American Physical Society URL:
http://link.aps.org/doi/10.1103/PhysRevLett.72.3305
DOI:
10.1103/PhysRevLett.72.3305
PACS:
98.80.Cq, 04.20.Dw
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