2026-07-072026-07-07http://salesiana.dossiersoluciones.com/handle/123456789/80879We consider the spectral correlations of clean globally hyperbolic (chaotic) quantum systems. Field theoretical methods are applied to compute quantum corrections to the leading (`diagonal') contribution to the spectral form factor. Far-reaching structural parallels, as well as a number of differences, to recent semiclassical approaches to the problem are discussed.18 pages, 4 figures, revised version, accepted for publication in J. Phys A (Math. Gen.)Chaotic DynamicsMesoscale and Nanoscale Physicstext