Full Eigenstate Thermalization in Integrable Spin Systems
The study tests if full Eigenstate Thermalization (full ETH), a theory about thermal behavior in quantum systems, holds true for integrable spin models like Ising and XXZ chains. While standard ETH is known to work in chaotic systems, this research investigates how integrability affects higher-order correlations and time evolution measures like the OTOC. The findings show that integrability causes differences in late-time dynamics compared to chaotic systems.