2022
07/25
OPEN
Date
2022/07/25（Mon） 16:00～17:00
Venue
Hybrid (On-site: Seminar room 321, 322. Online: Zoom)
Speaker
Prof. Hikaru Kawai ( National Taiwan University )
Language
English
URL
Contact
Katsuta SAKAI / sakaika-AT-post.kek.jp
Overview
Considering a system of particles in a gravitational field for example, in classical mechanics, there is naturally a one-to-one correspondence between the motion observed by an freely falling observer and the motion observed by a distant observer. However, in quantum mechanics, a “good wave packet” whose position and velocity are relatively well determined for one observer is not necessarily a “good wave packet” for another observer, which means the above one-to-one correspondence no longer exists. We will argue that such deviations can be significantly large when non-renormalizable interactions, or interactions that becomes strong at the Planck scale, such as gravity, are taken into account.