Removing singularities

Shmuel Elitzur*, Amit Giveon, Eliezer Rabinovici

*Corresponding author for this work

Research output: Contribution to journalArticlepeer-review

22 Scopus citations


Big bang/crunch curvature singularities in exact CFT string backgrounds can be removed by turning on gauge fields. This is described within a family of SL(2)×SU(2)×U(1)x/ U(1)×U(1) quotient CFTs. Uncharged incoming wavefunctions from the "whiskers" of the extended universe can be fully reflected if and only if a big bang/crunch curvature singularity, from which they are scattered, exists. Extended BTZ-like singularities remain as long as U(1)x is compact.

Original languageAmerican English
Pages (from-to)377-395
Number of pages19
JournalJournal of High Energy Physics
Issue number1
StatePublished - 1 Jan 2003


  • AdS-CFT and dS-CFT Correspondence
  • Conformal Field Models in String Theory


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