We show that for Green–Schwarz superstring in AdS3×S3, the one-parameter family of flat currents retains a zero-curvature condition and keeps the variation relations under κ-symmetry, diffeomorphism, local Lorentz SO(1,2)×SO(3) and global PSU(1,1|2)2 symmetry transformations respectively. This indicates that the flat currents exist in all the κ-symmetry gauge fixed cases. As a result, we find that the infinite conserved quantities are invariant under these transformations and independent of the gauge choice of the system.
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WANG Zhan-Yun, KE San-Min, HAO Kun, SHI Kang-Jie. Flat Currents of Green–Schwarz Superstring in AdS3×S3 under Symmetry Transformations[J]. Chin. Phys. Lett., 2011, 28(3): 031101. DOI: 10.1088/0256-307X/28/3/031101
WANG Zhan-Yun, KE San-Min, HAO Kun, SHI Kang-Jie. Flat Currents of Green–Schwarz Superstring in AdS3×S3 under Symmetry Transformations[J]. Chin. Phys. Lett., 2011, 28(3): 031101. DOI: 10.1088/0256-307X/28/3/031101
WANG Zhan-Yun, KE San-Min, HAO Kun, SHI Kang-Jie. Flat Currents of Green–Schwarz Superstring in AdS3×S3 under Symmetry Transformations[J]. Chin. Phys. Lett., 2011, 28(3): 031101. DOI: 10.1088/0256-307X/28/3/031101
WANG Zhan-Yun, KE San-Min, HAO Kun, SHI Kang-Jie. Flat Currents of Green–Schwarz Superstring in AdS3×S3 under Symmetry Transformations[J]. Chin. Phys. Lett., 2011, 28(3): 031101. DOI: 10.1088/0256-307X/28/3/031101
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