D0-brane recoil revisited

Details D0-brane recoil revisited D0-brane recoil revisited

2006-09-29

arxiv.org/abs/hep-th/0609216v1

JHEP0612:081,2006

Physics

High Energy Physics

High Energy Physics - Theory

36 pages

Scientific paper

10.1088/1126-6708/2006/12/081

One-loop string scattering amplitudes computed using the standard D0-brane conformal field theory (CFT) suffer from infrared divergences associated with recoil. A systematic framework to take recoil into account is the worldline formalism, where fixed boundary conditions are replaced by dynamical D0-brane worldlines. We show that, in the worldline formalism, the divergences that plague the CFT are automatically cancelled in a non-trivial way. The amplitudes derived in the worldline formalism can be reproduced by deforming the CFT with a specific "recoil operator", which is bilocal and different from the ones previously suggested in the literature.

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