On the equivalence of fermionic string to bosonic string in two dimensions

Details On the equivalence of fermionic string to bosonic string in two dimensions On the equivalence of fermionic string to bosonic string in two dimensions

1995-11-27

arxiv.org/abs/hep-th/9511186v1

Phys.Lett. B385 (1996) 117-124

Physics

High Energy Physics

High Energy Physics - Theory

13 pages, latex

Scientific paper

10.1016/0370-2693(96)00850-7

Two-dimensional fermionic string theory is shown to have a structure of topological model, which is isomorphic to a tensor product of two topological ghost systems independent of each other. One of them is identified with $c=1$ bosonic string theory while the other has trivial physical contents. This fact enables us to regard two-dimensional fermionic string theory as an embedding of $c=1$ bosonic string theory in the moduli space of fermionic string theories. Upon this embedding, the discrete states of $c=1$ string theory are mapped to those of fermionic string theory, which is considered to be the origin of the similarity between the physical spectra of these two theories. We also discuss a novel BRST operator associated with this topological structure.

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