The Self-Dual Critical N=2 String

Olaf Lechtenfeld

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arXiv · hep-th/9607106

The Self-Dual Critical N=2 String

Olaf Lechtenfeld

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Abstract

I review the covariant quantization of the closed fermionic string with (2,2) extended world-sheet supersymmetry on R^{2,2}. Results on n-point scattering amplitudes are presented, for tree- and one-loop world-sheets with arbitrary Maxwell instanton number. I elaborate the connection between Maxwell moduli, spectral flow, and instantons. It is argued that the latter serve to extend the Lorentz symmetry from U(1,1) to SO(2,2) by undoing the choice of spacetime complex structure.

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Olaf Lechtenfeld. 1996-07-13. The Self-Dual Critical N=2 String. https://arxiv.org/abs/hep-th/9607106

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