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Título: | Beyond the Schwinger boson representation of the su(2)-algebra. I -- New boson representation based on the su(1,1)-algebra and its related problems with application | Autor: | Tsue, Yasuhiko Providência, Constança Providência, João da Yamamura, Masatoshi |
Palavras-chave: | Nuclear Theory | Data: | 12-Set-2014 | Editora: | Oxford University Press | Projeto: | Grants-in-Aid for Scientific Research (No. 23540311, No. 26400277) from the Ministry of Education, Culture, Sports, Science and Technology in Japan. | Título da revista, periódico, livro ou evento: | Progress of Theoretical and Experimental Physics | Volume: | 2015 | Número: | 4 | Resumo: | With the use of two kinds of boson operators, a new boson representation of the su(2)-algebra is proposed. The basic idea comes from the pseudo su(1,1)-algebra recently given by the present authors. It forms a striking contrast to the Schwinger boson representation of the su(2)-algebra which is also based on two kinds of bosons. This representation may be suitable for describing time-dependence of the system interacting with the external environment in the framework of the thermo field dynamics formalism, i.e., the phase space doubling. Further, several deformations related to the su(2)-algebra in this boson representation are discussed. On the basis of these deformed algebra, various types of time-evolution of a simple boson system are investigated. | Descrição: | 31 pages, 6 figures | URI: | https://hdl.handle.net/10316/109291 | ISSN: | 2050-3911 | DOI: | 10.1093/ptep/ptv003 | Direitos: | openAccess |
Aparece nas coleções: | FCTUC Física - Artigos em Revistas Internacionais |
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Beyond the Schwinger boson representation of the su(2)-algebra.pdf | 671.93 kB | Adobe PDF | Ver/Abrir |
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