Michael Kroyter, Yuji Okawa, Martin Schnabl, Shingo Torii, Barton Zwiebach
The WZW form of open superstring field theory has linearized gauge
invariances associated with the BRST operator Q and the zero mode eta_0 of the
picture minus-one fermionic superconformal ghost. We discuss gauge fixing of
the free theory in a simple class of gauges using the Faddeev-Popov method. We
find that the world-sheet ghost number of ghost and antighost string fields
ranges over all integers, except one, and at any fixed ghost number, only a
finite number of picture numbers appear. We calculate the propagators in a
variety of gauges and determine the field-antifield content and the free master
action in the Batalin-Vilkovisky formalism. Unlike the case of bosonic string
field theory, the resulting master action is not simply related to the original
gauge-invariant action by relaxing the constraint on the ghost and picture
numbers.
View original:
http://arxiv.org/abs/1201.1761
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