The short distance behavior 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(munu)(x) of the theory. In terms of form factors, this is equivalent to having a possible nonzero matrix element F1 of the trace of T(munu) on a one-particle state. Each choice of F1 induces a different scaling behavior of the massive theory in the ultraviolet limit.
STRESS-ENERGY TENSOR AND ULTRAVIOLET BEHAVIOR IN MASSIVE INTEGRABLE QUANTUM-FIELD THEORIES / Mussardo, Giuseppe; Simonetti, P.. - In: INTERNATIONAL JOURNAL OF MODERN PHYSICS A. - ISSN 0217-751X. - 9:19(1994), pp. 3307-3337. [10.1142/S0217751X94001308]
STRESS-ENERGY TENSOR AND ULTRAVIOLET BEHAVIOR IN MASSIVE INTEGRABLE QUANTUM-FIELD THEORIES
Mussardo, Giuseppe;
1994-01-01
Abstract
The short distance behavior 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(munu)(x) of the theory. In terms of form factors, this is equivalent to having a possible nonzero matrix element F1 of the trace of T(munu) on a one-particle state. Each choice of F1 induces a different scaling behavior of the massive theory in the ultraviolet limit.I documenti in IRIS sono protetti da copyright e tutti i diritti sono riservati, salvo diversa indicazione.
