開始日時	2022/07/25　16:00
終了日時	2022/07/25　17:00
講演者	川合 光　招聘教授（台湾国立大学）
会場	ハイブリッド形式 : オンライン (Zoom) + セミナールーム（研究本館321,322)
連絡先	酒井勝太／sakaika-AT-post.kek.jp
言語	English
ウェブサイト

概要

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.