The calculation of critical indices by the rational approximation method
Robert T. Baumel, J. L. Gammel, J. Nuttall +1 more
A new method of calculating critical indices from series expansions is given. The method involves rational approximation with a denominator chosen so that the effect of singularities other than the critical one is minimised. The method suggests that the index for the low-temperature spontaneous magnetisation in the spin- 1 / 2 Ising model may be 0.323+or-0.003 for both BCC and FCC lattices.
Journal of Physics A Mathematical and General•Oct 1, 1982•5 citations