Some exact results on tachyon condensation in string field theory

  title={Some exact results on tachyon condensation in string field theory},
  author={David Kutasov and Marcos Mari{\~n}o and Gregory Moore},
  journal={Journal of High Energy Physics},
The study of open string tachyon condensation in string field theory can be drastically simplified by making an appropriate choice of coordinates on the space of string fields. We show that a very natural coordinate system is suggested by the connection between the worldsheet renormalization group and spacetime physics. In this system only one field, the tachyon, condenses while all other fields have vanishing expectation values. These coordinates are also well-suited to the study of D-branes… 

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