Representations of the Nappi--Witten vertex operator algebra
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"Representations of the Nappi--Witte..." refers background in this paper
...This identification not only algebraically formalises the conformal symmetry of these models, it also means that the representation theory of the corresponding affine Kac–Moody algebras [2] is available to organise the spectrum....
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...C([2],2)+C([2,1],1) = 0 and C([1,1],2)+ 3C([1,1,1],1) = 0....
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...12) C(∅,4)+ 3C([3],1) = 0, C([1],3)+C([2],2)+ 3C([2,1],1)= 0 and C([1,1],2)+ 3C([1,1,1],1) = 0....
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...Finally, there are two ways to remove a part from [2,1], hence the second equation of (A....
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...U =C(∅,4)E−4+C([1],3)I−1E−3+C([2],2)I−2E−2+C([1,1],2)I 2 −1E−2 (A....
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"Representations of the Nappi--Witte..." refers background in this paper
...Wess–Zumino–Witten models are examples of nonlinear sigma models that describe (noncritical) strings propagating on Lie groups or supergroups [1]....
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...11b) C(∅,4)+ 2C([2],2) = 0 and C([1],3)+ 2C([2,1],1) = 0...
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...+C([3],1)I−3E−1 +C([2,1],1)I−2I−1E−1 +C([1,1,1],1)I 3 −1E−1....
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...U =C(∅,4)E−4 +C([1],3)I−1E−3 +C([2],2)I−2E−2 +C([1,1],2)I 2 −1E−2 (A....
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"Representations of the Nappi--Witte..." refers background in this paper
...This parabolic Verma module carries the structure of a vertex algebra given by the standard affine state-field correspondence [35]....
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