Unstable vacuum and fermion total reflection by the Klein step

Hiromichi Nakazato, Makoto Ochiai*

*この研究の対応する著者

研究成果: Article査読

抄録

The so-called Klein tunneling is re-examined within the framework of quantum field theory, but from a different point of view on the asymptotic states. We treat it as a one-dimensional scattering process of a fermion incident to a step potential and introduce asymptotic operators as appropriate t = ±∞ limits of the field operator responsible for the process. For the so-called Klein energy range, two asymptotic vacua naturally emerge which are defined as states annihilated by the asymptotic annihilation operators. They are related by a similarity transformation, which entails an unstable vacuum. When a fermion with incident energy in the Klein region is injected to the step, it is shown to be reflected with probability one, accompanied by fermion-anti-fermion pairs that are vacuum decay products.

本文言語English
論文番号073B02
ジャーナルProgress of Theoretical and Experimental Physics
2022
7
DOI
出版ステータスPublished - 2022 7月 1

ASJC Scopus subject areas

  • 物理学および天文学(全般)

フィンガープリント

「Unstable vacuum and fermion total reflection by the Klein step」の研究トピックを掘り下げます。これらがまとまってユニークなフィンガープリントを構成します。

引用スタイル