Anomalous reparametrizations and butterfly states in string field theory

Details Anomalous reparametrizations and butterfly states in string field theory Anomalous reparametrizations and butterfly states in string field theory

2002-02-20

arxiv.org/abs/hep-th/0202139v2

Nucl.Phys. B649 (2003) 101-129

Physics

High Energy Physics

High Energy Physics - Theory

37 pages, 4 figures, v2: numerical factors in section 2.3 and Appendix C corrected, report number corrected

Scientific paper

10.1016/S0550-3213(02)01018-0

The reparametrization symmetries of Witten's vertex in ordinary or vacuum string field theories can be used to extract useful information about classical solutions of the equations of motion corresponding to D-branes. It follows, that the vacuum string field theory in general has to be regularized. For the regularization recently considered by Gaiotto et al., we show that the identities we derive, are so constraining, that among all surface states they uniquely select the simplest butterfly projector discovered numerically by those authors. The reparametrization symmetries are also used to give a simple proof that the butterfly states and their generalizations are indeed projectors.

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