All-loop correlators of integrable lambda-deformed sigma-models

作者：Georgiou George; Sfetsos Konstantinos; Siampos Konstantinos^*

来源：Nuclear Physics B, 2016, 909: 360-393.

DOI：10.1016/j.nuclphysb.2016.05.018

We compute the 2- and 3-point functions of currents and primary fields of lambda-deformed integrable sigma-models characterized also by an integer k. Our results apply for any semisimple group G, for all values of the deformation parameter lambda and up to order 1/k. We deduce the OPEs and equal-time commutators of all currents and primaries. We derive the currents' Poisson brackets which assume Rajeev's deformation of the canonical structure of the isotropic PCM, the underlying structure of the integrable lambda-deformed sigma-models. We also present analogous results in two limiting cases of special interest, namely for the non-Abelian T-dual of the PCM and for the pseudodual model.

• 出版日期2016-8