Geodesic
The $1/N$-expansion for flag-manifold $\sigma$-models
Teoretičeskaâ i matematičeskaâ fizika, Tome 197 (2018) no. 3, pp. 345-355 Cet article a éte moissonné depuis la source Math-Net.Ru

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We derive the Feynman rules for the $1/N$-expansion of the simplest $\sigma$-model in the class of models that we previously proposed. We consider the case where the target space is the flag manifold $\frac{U(N)}{U(1)\times U(1)\times U(N-2)}$.
Keywords: $\sigma$-model, Feynman rule, $1/N$-expansion. 
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     author = {D. V. Bykov},
     title = {The~$1/N$-expansion for flag-manifold $\sigma$-models},
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     url = {http://geodesic.mathdoc.fr/item/TMF_2018_197_3_a0/}
}
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D. V. Bykov. The $1/N$-expansion for flag-manifold $\sigma$-models. Teoretičeskaâ i matematičeskaâ fizika, Tome 197 (2018) no. 3, pp. 345-355. http://geodesic.mathdoc.fr/item/TMF_2018_197_3_a0/

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