Year: 2026
Type: preprint
Abstract: Using thermal analyticity, we derive directional large-frequency bounds on the smooth functions entering full eigenstate thermalization in continuum quantum field theory. The strongest directions reproduce the scales previously identified for lattice systems, while the complete analyticity domain reveals an asymmetric multifrequency structure. Thermal conformal correlators saturate the second- and third-order bounds, and the leading gravitational Regge contribution saturates the strongest fourth-order direction.
Source: arXiv (Cornell University)
Authors: Espíndola, Ricardo, Jahnke, Viktor
Institutions: Tsinghua University, Universidade Estadual Paulista (Unesp)
Language: English
Topic: Quantum many-body systems
Subfield: Atomic and Molecular Physics, and Optics
Field: Physics and Astronomy
Domain: Physical Sciences
Open Access status: green
Award: G5046288916
OpenAlex ID: W7213521873