Anomalous reparametrizations and butterfly states in string field theory
Abstract
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 Dbranes. 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 these authors. The reparametrization symmetries are also used to give a simple proof that the butterfly states and their generalizations are indeed projectors.
 Publication:

Nuclear Physics B
 Pub Date:
 January 2003
 DOI:
 10.1016/S05503213(02)010180
 arXiv:
 arXiv:hepth/0202139
 Bibcode:
 2003NuPhB.649..101S
 Keywords:

 High Energy Physics  Theory
 EPrint:
 37 pages, 4 figures, v2: numerical factors in section 2.3 and Appendix C corrected, report number corrected