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hep-th1993
Harmonic Maps and Self-Dual Equations for Immersed Surfaces
R. Parthasarathy, K. S. Viswanathan
The immersion of the string world sheet, regarded as a Riemann surface, in and is described by the generalized Gauss map. When the Gauss map is harmonic or equivalently…
hep-th1993
Extrinsic Curvature Induced 2-d Gravity
K. S. Viswanathan, R. Parthasarathy
Abtract: 2-dimensional fermions are coupled to extrinsic geometry of a conformally immersed surface in through gauge coupling. By integrating out the fermions, we obtai…