Path Integral Bosonization of Massive GNO Fermions

Details Path Integral Bosonization of Massive GNO Fermions Path Integral Bosonization of Massive GNO Fermions

1997-03-13

arxiv.org/abs/hep-th/9703096v1

Nucl.Phys. B506 (1997) 537-547

Physics

High Energy Physics

High Energy Physics - Theory

11 pages

Scientific paper

10.1016/S0550-3213(97)00539-7

We show the quantum equivalence between certain symmetric space sine-Gordon models and the massive free fermions. In the massless limit, these fermions reduce to the free fermions introduced by Goddard, Nahm and Olive (GNO) in association with symmetric spaces $K/G$. A path integral formulation is given in terms of the Wess-Zumino-Witten action where the field variable $g$ takes value in the orthogonal, unitary, and symplectic representations of the group $G$ in the basis of the symmetric space. We show that, for example, such a path integral bosonization is possible when the symmetric spaces $K/G$ are $SU(N) \times SU(N)/SU(N); N \le 3, ~ Sp(2)/U(2)$ or $SO(8)/U(4)$. We also address the relation between massive GNO fermions and the nonabelian solitons, and explain the restriction imposed on the fermion mass matrix due to the integrability of the bosonic model.

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