Can free strings propagate across plane wave singularities?

Ben Craps, Frederik De Roo, Oleg Evnin

Research output: Contribution to journalArticlepeer-review

12 Citations (Scopus)


We study free string propagation in families of plane wave geometries developing
strong scale-invariant singularities in certain limits. We relate the singular limit of
the evolution for all excited string modes to that of the center-of-mass motion (the latter
existing for discrete values of the overall plane wave profile normalization). Requiring that
the entire excitation energy of the string should be finite turns out to be quite restrictive
and essentially excludes consistent propagation across the singularity, unless dimensionful
scales are introduced at the singular locus (in an otherwise scale-invariant space-time).
Original languageEnglish
Article number105
Pages (from-to)1-23
Number of pages24
JournalThe Journal of high energy physics
Issue number3
Publication statusPublished - 19 Mar 2009


  • Penrose limit and pp-wave background
  • M(atrix) Theories


Dive into the research topics of 'Can free strings propagate across plane wave singularities?'. Together they form a unique fingerprint.

Cite this