Stress-Energy Tensor and Ultraviolet Behaviour in Massive Integrable Quantum Field Theories

Abstract

The short distance behaviour of massive integrable quantum field theories is analyzed in terms of the form factor approach. We show that the on-shell dynamics is compatible with different definitions of the stress-energy tensor $T_{\mu \nu }(x)$ of the theory. In terms of form factors, this is equivalent to having a possible non-zero matrix element $F_1$ of the trace of $T_{\mu \nu }$ on one-particle state. Each choice of $F_1$ induces a different scaling behaviour of the massive theory in the ultraviolet limit.

32 pages LATEX file (Three figures not included in the text) ISAS/EP/93/68

References in corpus (1)

• Mapping between the Sinh-Gordon and Ising Models

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