next up previous
Next: Dynamic Critical Exponents Up: ProblemsSubtleties, and Previous: Critical Slowing Down

Critical Slowing Down (cont.)

The integrated autocorrelation time

is a measure of how correlations affect statistical errors. It is normalized so that if . It can be shown that for MC measurements

A major problem for MC simulations is that diverges at !! This is known as critical slowing down.

Paul Coddington, Northeast Parallel Architectures Center at Syracuse University,