出版社：SISSA, Scuola Internazionale Superiore di Studi Avanzati
摘要：We propose a method to obtain physical quantities in the q vacuum from those at fixed topology,
which are different by finite size effects. Extending the work by Brower et al., we derive
the formula to estimate these finite size corrections for arbitrary correlators in terms of the topological
susceptibility and the q dependence. Applying this formula, we show that topological
susceptibility can be measured through two-point functions of pseudoscalar operator.
