Integrable Systems Away from Criticality: The Toda Field Theory and S Matrix of the Tricritical Ising Model

Christe, P.; Mussardo, G.

doi:10.1016/0550-3213(90)90119-X

Integrable Systems Away from Criticality: The Toda Field Theory and S Matrix of the Tricritical Ising Model

P. Christe
(
- UC, Santa Barbara
)
,
G. Mussardo
(
- UC, Santa Barbara
)

May, 1989

23 pages

Published in:

Nucl.Phys.B 330 (1990) 465-487

Published: 1990

DOI:

10.1016/0550-3213(90)90119-X

Report number:

UCSB-TH-89-19

View in:

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Abstract: (Elsevier)

The tricritical Ising model, considered as coset construction with the exceptional group E 7 , is analyzed away from criticality. The additional conserved currents of the corresponding Toda system imply the factorization of the S -matrix, explicitly computed. We discuss the origin of higher-order poles on the physical sheet of the scattering amplitudes and their relevance to the three-point couplings of the theory.

Ising model
critical phenomena
symmetry: E(7)
current: conservation law
S-matrix: factorization
lattice field theory: Toda
renormalization
multiple scattering
field theory: conformal
Yang-Baxter equation

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