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OFF-CRITICAL STATISTICAL-MODELS - FACTORIZED SCATTERING THEORIES AND BOOTSTRAP PROGRAM
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DOI：10.1016/0370-1573(92)90047-4.png)
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摘要
En 中文
We analyze those integrable statistical systems which originate from some relevant perturbations of the minimal models of conformal field theories. When only massive excitations are present, the systems can be efficiently characterized in terms of the relativistic scattering data. We review the general properties of the factorizable S-matrix in two dimensions with particular emphasis on the bootstrap principle. The classification program of the allowed spins of conserved currents and of the non-degenerate S-matrices is discussed and illustrated by means of some significant examples. The scattering theories of several massive perturbations of the minimal models are fully discussed. Among them are the Ising model, the tricritical Ising model, the Potts models, the series of the non-unitary minimal models M2,2n+3, the non-unitary model M3,5 and the scaling limit of the polymer system. The ultraviolet limit of these massive integrable theories can be exploited by the thermodynamics Bethe ansatz, in particular the central charge of the original conformal theories can be recovered from the scattering data. We also consider the numerical method based on the so-called conformal space truncated approach which confirms the theoretical results and allows a direct measurement of the scattering data, i.e. the masses and the S-matrix of the particles in bootstrap interaction. The problem of computing the off-critical correlation functions is discussed in terms of the form-factor approach.
Keyword:
QUANTUM-FIELD-THEORY
TRICRITICAL ISING-MODEL
SINE-GORDON THEORY
THERMODYNAMIC BETHE-ANSATZ
EXACT S-MATRICES
LEE EDGE SINGULARITY
AFFINE TODA THEORIES
CONFORMALLY INVARIANT THEORIES
EXACT MASS GAP
2 DIMENSIONS
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