Two-dimensional fermionic correlations in topologically nontrivial backgrounds

M. V. MANÍAS; C. M. NAÓN; M.L. TROBO

PHYSICAL REVIEW D - PARTICLE AND FILDS

APS

Lugar: EE.UU.; Año: 1993 vol. 47 p. 3592 - 3599

0556-2821

By using a path-integral approach to the study of two-dimensional massless fermionic models in nontrivial sectors, we compute certain special correlation functions which are nonvanishing only when nontrivial topology is taken into account. In particular, we derive the first explicit expression for the socalled nonminimal Green's function. We introduce one specific topological charge distribution for which this correlation function takes a simple form. We also comment on the application of our results to the analysis of massive fermions in topological backgrounds.