A late times approximation for the SYK spectral form factor
arXiv:2102.01653
Abstract
We find a late times approximation for the SYK spectral form factor from a large steepest descent version of the path integral over two replica collective fields. Main ingredients are a suitable uv regularization of the two replica kinetic operator, the property of its Fourier transform and some spectral analysis of the four point function two replica ladder kernel.
v2: References added