Renormalization group limit-cycles and field theories for elliptic S-matrices

Details Renormalization group limit-cycles and field theories for elliptic S-matrices Renormalization group limit-cycles and field theories for elliptic S-matrices

2004-03-17

arxiv.org/abs/hep-th/0403178v3

J.Stat.Mech.0408:P08004,2004

Physics

High Energy Physics

High Energy Physics - Theory

version 2: only some additional references version 3: a reason for why the c-theorem is violated is proposed. published versio

Scientific paper

10.1088/1742-5468/2004/08/P08004

The renormalization group for maximally anisotropic su(2) current interactions in 2d is shown to be cyclic at one loop. The fermionized version of the model exhibits spin-charge separation of the 4-fermion interactions and has Z_4 symmetry. It is proposed that the S-matrices for these theories are the elliptic S-matrices of Zamolodchikov and Mussardo-Penati. The S-matrix parameters are related to lagrangian parameters by matching the period of the renormalization group. All models exhibit two characteristic signatures of an RG limit cycle: periodicity of the S-matrix as a function of energy and the existence of an infinite number of resonance poles satisfying Russian doll scaling.

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