# 東京理科大学理工学部 数学科

seminar:2002:011

### 第11回

• 講演者: 瀬藤 憲昭 氏 (広島大学工学部)
• 題目: Spectral properties of a spinor-type Bethe-Salpeter equation
• 日時: 10月28日(月) 16:00 〜 17:00
• 場所: 数学科セミナー室 4号館 3階

The bound state problem is considered within the framework of the Bethe-Salpeter (BS) equation in the ladder model. The bound state are composed of a fermion and an antifermion of equal mass $m$ interacting through the exchange of a massless vector particle. Spectral properties of the coupling constant as a function of the bound state mass $E$ ($0\leq E<2m$) are clarified. Global views are obtained connecting the Goldstein problem (the appearance of continuous spectra in the spinor-spinor BS equation) with the abnormal solutions in the Wick- Cutkosky model (the scalar-scalar BS equation).

seminar/2002/011.txt · 最終更新: 2017/11/27 11:33 (外部編集)