Physics – High Energy Physics – High Energy Physics - Theory
Scientific paper
1996-07-22
J.Math.Phys. 40 (1999) 3761-3772
Physics
High Energy Physics
High Energy Physics - Theory
Latex2e, requires cite.sty package, 13 pages. Additional footnote, citation and references
Scientific paper
10.1063/1.532925
From the equivalence of the bosonic and fermionic representations of finitized characters in conformal field theory, one can extract mathematical objects known as Bailey pairs. Recently Berkovich, McCoy and Schilling have constructed a `generalized' character formula depending on two parameters $\ra$ and $\r2$, using the Bailey pairs of the unitary model $M(p-1,p)$. By taking appropriate limits of these parameters, they were able to obtain the characters of model $M(p,p+1)$, $N=1$ model $SM(p,p+2)$, and the unitary $N=2$ model with central charge $c=3(1-{\frac{2}{p}})$. In this letter we computed the effective central charge associated with this `generalized' character formula using a saddle point method. The result is a simple expression in dilogarithms which interpolates between the central charges of these unitary models.
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