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Paper   IPM / Physic / 6907
School of Physics
  Title:   Comment on Constraint Quantization of Open String in Background B Field and Noncommutative D-Brane
  Author(s):  F. Loran
  Status:   Published
  Journal: Phys. Lett. B
  No.:  53
  Vol.:  544
  Year:  2002
  Pages:   199-201
  Supported by:  IPM
  Abstract:
In the paper "Constraint Quantization of Open String in Background B field and Noncommutative D-brane", it is claimed that the boundary conditions lead to an infinite set of secondary constraints and Dirac brackets result in a non-commutative Poisson structure for D-brain. Here we show that contrary to the arguments in that paper, the set of secondary constraints on the boundary is finite and the non-commutativity algebra can not be obtained by evaluating the Dirac brackets.

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