OTOC, complexity and entropy in bi-partite systems

Understand

There is a remarkable interest in the study of Out-of-time ordered correlators (OTOCs) that goes from many body theory and high energy physics to quantum chaos.

• In this latter case there is a special focus on the comparison with the traditional measures of quantum complexity such as the spectral statistics, for example.
• The exponential growth has been verified for many paradigmatic maps and systems.
• But less is known for multi-partite cases.