Embeddings for non-critical superstrings
Berkovits, N, Ohta, N · CERN Document Server (European Organization for Nuclear Research) · 1994
It was previously shown that at critical central charge, N-extended superstrings can be embedded in (N+1)-extended superstrings. In other words, (N=0,c=26)\\to (N=1,c=15)\\to (N=2,c=6)\\to (N=3,c=0) \\to (N=4,c=0) . In this paper, we show that similar embeddings are also possible for N-extended superstrings at non-critical central charge. For any x, the embedding is (N=0,c=26+x) \\to (N=1,c=15+x) \\to (N=2,c=6+x) \\to (N=3,c=x) \\to (N=4,c=x). As was conjectured by Vafa, the (N=2,c=9) \\to (N=3,c=3) embedding can be used to prove that N=0 topological strings are special vaccua of N=1 topological strings.