author={Constantin P. Bachas},
  journal={Physics Letters B},
  • C. Bachas
  • Published 7 November 1995
  • Physics
  • Physics Letters B
I calculate the semiclassical phase shift (δ), as function of impact parameter (b) and velocity (ν), when one D-brane moves past another. From its low-velocity expansion I show that, for torroidal compactifications, the moduli space of two identical D-branes stays flat to all orders in α′. For K3 compactifications, the calculation of the D-brane moduli-space metric can be mapped to a dual gauge-coupling renormalization problem. In the ultrarelativistic regime, the absorptive part of the phase… Expand
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