Time-symmetric cosmology and the opacity of the future light cone

P. C.W. Davies, J. Twamley

Research output: Contribution to journalArticlepeer-review

19 Scopus citations


If the arrow of time reverses in a recontracting universe it could produce observable electromagnetic effects. The authors argue that the existing observational data offer strong evidence against recent versions of time-symmetric universe models, assuming the universe is essentially transparent on the future light cone. They investigate this assumption for a simple recontracting Friedmann model.

Original languageEnglish (US)
Article number011
Pages (from-to)931-945
Number of pages15
JournalClassical and Quantum Gravity
Issue number5
StatePublished - 1993
Externally publishedYes

ASJC Scopus subject areas

  • Physics and Astronomy (miscellaneous)


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