Speaker
Teruaki Nagasawa
(Kanazawa University)
Description
Thermalization and gravity have one thing in common: they do not align well with quantum mechanics. One possible explanation for this is that these phenomena are macroscopic rather than microscopic. So, what does it mean to be 'macro'? Furthermore, these phenomena may be characterized by the fact that they are described as relative to each observer. In order to address these questions, we will discuss a mathematical framework based on the concept of observer-dependent entropy. In particular, we will discuss how the increase in entropy occurs.