開始日時	2021/08/03　16:00
終了日時	2021/08/03　17:00
講演者	Prof. Neil Turok( The University of Edinburgh )
会場	Online (Zoom)
連絡先	skengo-AT-post.kek.jp
言語	English
ウェブサイト

概要

We show how Feynman’s path integral for quantum mechanical theories may be defined without a Wick rotation to imaginary time. Instead, we employ analytic continuation (and Cauchy’s theorem) in the complexified space of paths being integrated over. We outline a new existence proof for real time path integrals and describe physical applications, from nonrelativistic quantum mechanics to interference patterns in radio astronomy and caustics in Yang-Mills theories. Our target is gravity: I outline the remaining challenges.