# The Normalization of Perturbative String Amplitudes: Weyl Covariance and Zeta Function Regularization

@article{Chaudhuri2004TheNO, title={The Normalization of Perturbative String Amplitudes: Weyl Covariance and Zeta Function Regularization}, author={S. Chaudhuri}, journal={arXiv: High Energy Physics - Theory}, year={2004} }

This is a self-contained pedagogical review of Polchinski's 1986 analysis from first principles of the Polyakov path integral based on Hawking's zeta function regularization technique for scale-invariant computations in two-dimensional quantum gravity, an approach that can be adapted to any of the perturbative string theories. In particular, we point out the physical significance of preserving both Weyl and global diffeomorphism invariance while taking the low energy field theory limit of…

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