Abstract
Developing the analysis in JHEP 03 (2014) 044 [ arXiv:1312.1677 ] by the present authors et al., we clarify the relation between the Witten formulation and the Berkovits formulation of open superstring field theory at the level of the master action, namely the solution to the classical master equation in the Batalin-Vilkovisky formalism, which is the key for the path-integral quantization. We first scrutinize the reducibility structure, a detailed gauge structure containing the information about ghost string fields. Then, extending the condition for partial gauge fixing introduced in the above-mentioned paper to the sector of ghost string fields, we investigate the master action. We show that the reducibility structure and the master action under partial gauge fixing of the Berkovits formulation can be regarded as the regularized versions of those in the Witten formulation.
Highlights
Investigated with the technique of partial gauge fixing, especially in the Neveu-Schwarz (NS) sector [13, 14]
Developing the analysis in JHEP 03 (2014) 044 [arXiv:1312.1677] by the present authors et al, we clarify the relation between the Witten formulation and the Berkovits formulation of open superstring field theory at the level of the master action, namely the solution to the classical master equation in the Batalin-Vilkovisky formalism, which is the key for the path-integral quantization
We show that the reducibility structure and the master action under partial gauge fixing of the Berkovits formulation can be regarded as the regularized versions of those in the Witten formulation
Summary
We review two formulations of open superstring field theory, concentrating on the NS sector. One is the Witten formulation [2], and the other is the Berkovits formulation [5]. The action in the former is constructed in the small Hilbert space, and that in the latter is in the large Hilbert space. We first summarize the basics of the two Hilbert spaces in subsection 2.1; we briefly review the Witten formulation in subsection 2.2 and the Berkovits formulation in subsection 2.3
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