Multiparticle Form Factors of the Principal Chiral Model At Large N

preprint2012arXivOpen access

We study the sigma model with $SU(N)\times SU(N)$ symmetry in 1+1 dimensions. The two- and four-particle form factors of the Noether current operators are found, by combining the integrable-bootstrap method with the large- $N$ expansion.

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Multiparticle Form Factors of the Principal Chiral Model At Large N

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