Challenges for superstring cosmology

Ram Brustein, Paul J. Steinhardt

Research output: Contribution to journalArticlepeer-review

220 Scopus citations


We consider whether current notions about superstring theory below the Planck scale are compatible with cosmology. We find that the anticipated form for the dilaton interaction creates a serious roadblock for inflation and makes it unlikely that the universe ever reaches a state with zero cosmological constant and time-independent gravitational constant.

Original languageEnglish (US)
Pages (from-to)196-201
Number of pages6
JournalPhysics Letters B
Issue number2-3
StatePublished - Mar 25 1993
Externally publishedYes

All Science Journal Classification (ASJC) codes

  • Nuclear and High Energy Physics


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