... describespacetime bosons, whereas NS⊗R and R⊗NS describe spacetime fermions. We will return to explore what this gives later, but first we need to explore the right-movers by themselvesin more detail.The zero ... anomalous Feynmandiagrams are hexagons, with six external gauge fields. The anomalies can be attributed to the massless fields, and therefore they can be analyzed in the low-energy e ective field theory. ... the embedding of the world sheet in the spacetime, just as before. However, in or-der to supersymmetrize the world-sheet theory, we also introduce d fermionic partner fieldsψµ(σ, τ). Note...