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2011•Progress of Theoretical Physics SupplementRequires access

Closed Strings in Open String Field Theory

Nicolas Moeller, Ivo Sachs

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Abstract

We show that cubic, open bosonic string field theory contains a second nilpotent operator such that 1) its cohomology is isomorphic to the space of physical closed string states, 2) exact elements correspond to physically trivial deformations and infinitesimal shifts of the open string background and 3) this cohomology is independent of the open string background.

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What this paper is about

We show that cubic, open bosonic string field theory contains a second nilpotent operator such that 1) its cohomology is isomorphic to the space of physical closed string states, 2) exact elements correspond to physically trivial deformations and infinitesimal shifts of the open string background and 3) this cohomology is independent of the open string background.

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Available abstract

We show that cubic, open bosonic string field theory contains a second nilpotent operator such that 1) its cohomology is isomorphic to the space of physical closed string states, 2) exact elements correspond to physically trivial deformations and infinitesimal shifts of the open string background and 3) this cohomology is independent of the open string background.

Key concepts: String field theory, Cohomology, Non-critical string theory, Type I string theory, Infinitesimal, String (physics), Mathematics, Nilpotent

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