Half-strings , Projectors , and Multiple D-branes in Vacuum String Field Theory

  title={Half-strings , Projectors , and Multiple D-branes in Vacuum String Field Theory},
  author={Leonardo Rastelli and Ashoke Sen and Barton Zwiebach},
A sliver state is a classical solution of the string field theory of the tachyon vacuum that represents a background with a single D25-brane. We show that the sliver wavefunctional factors into functionals of the left and right halves of the string, and hence can be naturally regarded as a rank-one projector in a space of half-string functionals. By developing an algebraic oscillator approach we are able construct higher rank projectors that describe configurations of multiple D-branes of… CONTINUE READING
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