著者

Kamimura Kiyoshi

出版者

一般社団法人日本物理学会

雑誌

Progress of theoretical physics (ISSN:0033068X)

巻号頁・発行日

vol.65, no.5, pp.1704-1718, 1981-05-25

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A set of models of extended objects in space-time is studied using geometrical language. They are natural generalization of the relativistic point particle to extended objects in Minkowski space. The relativistic string model is one of the examples and its properties are studied in some detail. The time like oscillation mode, which gives rise to ghost state in quantum theory, is always suppressed by the geometrical construction in this approach.