Closed string cohomology in open string field theory

被引：0
作者：
Nicolas Moeller
Ivo Sachs
机构：
[1] Arnold Sommerfeld Center for Theoretical Physics,
来源：
Journal of High Energy Physics | / 2011卷
关键词：
String Field Theory; Bosonic Strings;
D O I：
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学科分类号：
摘要：
We show that closed string states in bosonic string field theory are encoded in the cyclic cohomology of cubic open string field theory (OSFT) which, in turn, classifies the deformations of OSFT. This cohomology is then shown to be independent of the open string background. Exact elements correspond to closed string gauge transformations, generic boundary deformations of Witten’s 3-vertex and infinitesimal shifts of the open string background. Finally it is argued that the closed string cohomology and the cyclic cohomology of OSFT are isomorphic to each other.
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