INVESTIGADORES
NAON Carlos Maria
artículos
Título:
Linear divergence in the two-dimensional Ising spin-spin correlator and gauge invariance
Autor/es:
C. M. NAÓN
Revista:
JOURNAL OF PHYSICS. A - MATHEMATICAL AND GENERAL
Editorial:
IOP
Referencias:
Lugar: Bristol, Reino Unido; Año: 1990 vol. 23 p. 273 - 277
ISSN:
0305-4470
Resumen:
The author considers the linear divergence which appears in field-theoretical computations of the 2D Ising spin-spin correlation function. By expressing the correlator in terms of fermionic determinant, the author shows that this divergence is connected with a certain gauge transformation of the fermion model. The author proves that if gauge invariance is preserved then the divergent term is not present in the final result.
