# Another Critique of the Replica Trick

@article{Zirnbauer1999AnotherCO, title={Another Critique of the Replica Trick}, author={Martin R. Zirnbauer}, journal={arXiv: Mesoscale and Nanoscale Physics}, year={1999} }

Kamenev and Mezard, and Yurkevich and Lerner, have recently shown how to reproduce the large-frequency asymptotics of the energy level correlations for disordered electron systems, by doing perturbation theory around the saddles of the compact nonlinear sigma model derived from fermionic replicas. We present a critical review of their procedure and argue that its validity is limited to the perturbative regime of large frequency. The miraculous exactness of the saddle-point answer for beta = 2… Expand

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