Date of this Version
International Journal of Modern Physics A
We reconsider the problem of deforming a conformal ﬁeld theory to a neighboring theory which is again critical. An invariant formulation of this problem is important for understanding the underlying symmetry of string theory. We give a simple derivation of A. Sen’s recent formula for the change in the stress tensor and show that, when correctly interpreted, it is coordinate-invariant. We give the corresponding superconformal perturbation for superﬁeld backgrounds and explain why it has no direct analog for spin-ﬁeld backgrounds.
Electronic version of an article published as Int. J. Mod. Phys. A6, 6, 27, 1991, 4909-4924 10.1142/S0217751X9100232X © [copyright World Scientific Publishing Company] http://www.worldscientific.com/doi/abs/10.1142/S0217751X9100232X
Campbell, M., Nelson, P. C., & Wong, E. (1991). Stress Tensor Perturbations in Conformal Field Theory. International Journal of Modern Physics A, 6 (27), 4909-4924. http://dx.doi.org/10.1142/S0217751X9100232X
Date Posted: 01 May 2017
This document has been peer reviewed.