622 citations · 4.1k across the 90 of their papers we have counts for
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hep-th1995★ 50 cited
Curved Extended Superspace from Yang-Mills Theory a la Strings
W. Siegel
The massless superfield content of four-dimensional compactifications of closed superstrings with extended (N=2, 3, or 4) supersymmetry is derived by multiplying two (N=0, 1, or 2)…
hep-th1995★ 78 cited
Superspace Effective Actions for 4D Compactifications of Heterotic and Type II Superstrings
Nathan Berkovits, Warren Siegel
Two-dimensional sigma models are defined for the new manifestly spacetime supersymmetric description of four-dimensional compactified superstrings. The resulting target-superspace…
hep-th1995★ 7 cited
Subcritical Superstrings
W. Siegel
We introduce the Liouville mode into the Green-Schwarz superstring. Like massive supersymmetry without central charges, there is no kappa symmetry. However, the second-class constr…