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Cardy states as idempotents of fusion ring in string field theory | | Isao Kishimoto
; Yutaka Matsuo
; | | Date: |
14 Feb 2004 | | Journal: | Phys.Lett. B590 (2004) 303-308 DOI: 10.1016/j.physletb.2004.03.074 | | Subject: | hep-th | | Abstract: | With some assumptions, the algebra between Ishibashi states in string field theory can be reduced to a commutative ring. From this viewpoint, Cardy states can be identified with its idempotents. The algebra can be identified with a fusion ring for the rational conformal field theory and a group ring for the orbifold. This observation supports our previous observation that boundary states satisfy a universal idempotency relation under closed string star product. | | Source: | arXiv, hep-th/0402107 | | Services: | Forum | Review | PDF | Favorites | |
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