Past eternal universe in inflationary models

  • #1
472
9

Main Question or Discussion Point

Assuming inflation is true, we have this paper by Guth, Valenkin and Borde:
http://cdsweb.cern.ch/record/521154
which says that inflation cant be past eternal

and then we have this paper saying it can be made past eternal:
http://arxiv.org/abs/gr-qc/0301042

Can anyone explain to me the discrepancy in layman terms?
 

Answers and Replies

  • #2
Chronos
Science Advisor
Gold Member
11,408
738
Difference of opinon among respectable scientists. The eternal bounce scenario is not appealing because it inadequately explains how energy is recovered between cycles, imo.
 
  • #3
472
9
Thanks for that Chronos, can you describe in layman terms what are the different assumptions that lead them to the different conclusions? is there a consensus on this question amonst other comsologists?
 

Related Threads for: Past eternal universe in inflationary models

  • Last Post
Replies
2
Views
465
  • Last Post
Replies
2
Views
2K
Replies
1
Views
2K
Replies
2
Views
2K
  • Last Post
Replies
1
Views
1K
Replies
94
Views
4K
  • Last Post
Replies
7
Views
2K
  • Last Post
Replies
13
Views
4K
Top