A topological invariant of RG flows in 2D integrable quantum field theories

Details A topological invariant of RG flows in 2D integrable quantum field theories A topological invariant of RG flows in 2D integrable quantum field theories

1999-02-12

arxiv.org/abs/hep-th/9902094v2

Int.J.Mod.Phys. B13 (1999) 2927-2932

Physics

High Energy Physics

High Energy Physics - Theory

12 pages, 6 figures. Presented at the Euroconference on New Symmetries in Statistical Mech. and Cond. Mat. Physics, Torino, Ju

Scientific paper

We construct a topological invariant of the renormalization group
trajectories of a large class of 2D quantum integrable models, described by the
thermodynamic Bethe ansatz approach. A geometrical description of this
invariant in terms of triangulations of three-dimensional manifolds is proposed
and associated dilogarithm identities are proven.

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