Closed string radiation from moving D-branes

We compute the amplitude for the radiation of massless NS-NS closed string states from the interaction of two moving D-branes. We consider particle-like D-branes with reference to four-dimensional spacetime, in toroidal and orbifold compactifications, and we calculate the relevant world sheet propagators within the moving boundary state formalism. We find no on-shell axion emission. For large inter-brane separation, we compute the spacetime graviton emission amplitude and estimate the average energy radiated, whereas the spacetime dilaton amplitude is found to vanish in this limit. The possibility of emission of other massless states depends on the nature of the branes and of the compactification scheme. (C) 1998 Elsevier Science B.V.

• Publication year

  1997

• Venue

  Nuclear Physics

• Publication date

  1997-10-06

• Fields of study

  Physics

• Identifiers
  DOI 10.1016/S0550-3213(98)00088-1arXiv hep-th/9710049
• External record

  Open on Semantic Scholar

• Source metadata

  Semantic Scholar

• No claims are published for this paper.

• No concepts are published for this paper.

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