One-loop superstring cosmology and the nonsingular universe

Richard Easther*, Kei ichi Maeda

*Corresponding author for this work

Research output: Contribution to journalArticlepeer-review

111 Citations (Scopus)


We study the cosmological implications of the one-loop terms in string expansion. In particular, we find nonsingular solutions which interpolate between a contracting universe and an expanding universe, and show that these solutions provide a mechanism for removing the initial conditions problem peculiar to spatially closed FRW cosmologies. In addition, we perform numerical calculations to show that the nonsingular cosmologies do not require a careful choice of initial conditions, and estimate the likely magnitude of higher order terms in string expansion.

Original languageEnglish
Pages (from-to)7252-7260
Number of pages9
JournalPhysical Review D - Particles, Fields, Gravitation and Cosmology
Issue number12
Publication statusPublished - 1996
Externally publishedYes

ASJC Scopus subject areas

  • Nuclear and High Energy Physics
  • Physics and Astronomy (miscellaneous)


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