World-volume approach to absorption by non-dilatonic branes

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We calculate classical cross sections for absorption of massless scalars by the extremal 3-branes of type IIB theory, and by the extremal 2-and 5-branes of M-theory. The results are compared with corresponding calculations in the world-volume effective theories. For all three cases we find agreement in the scaling with the energy and the number of coincident branes. For 3-branes, whose stringy description is known in detail in terms of multiple D-branes, the string theoretic absorption cross section for low-energy dilatons is in exact agreement with the classical gravity. This suggests that scattering from extremal 3-branes is a unitary process well described by perturbative string theory.

Original languageEnglish (US)
Pages (from-to)231-242
Number of pages12
JournalNuclear Physics B
Issue number1-2
StatePublished - Jul 7 1997

All Science Journal Classification (ASJC) codes

  • Nuclear and High Energy Physics


  • Absorption
  • Dirichlet branes
  • Effective low-energy supergravity
  • M-theory
  • Self-dual threebrane
  • String theory


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