@article{oai:tsukuba.repo.nii.ac.jp:00015190,
 author = {青木, 愼也 and Aoki, Sinya and Fukaya, Hidenori and Hashimoto, Shoji and Onogi, Tetsuya},
 issue = {5},
 journal = {Physical review D},
 month = {Sep},
 note = {In finite volume the partition function of QCD with a given theta is a sum of different topological sectors with a weight primarily determined by the topological susceptibility. If a physical observable is evaluated only in a fixed topological sector, the result deviates from the true expectation value by an amount proportional to the inverse space-time volume 1/V. Using the saddle point expansion, we derive formulas to express the correction due to the fixed topological charge in terms of a 1/V expansion. Applying this formula, we propose a class of methods to determine the topological susceptibility in QCD from various correlation functions calculated in a fixed topological sector.},
 title = {Finite volume QCD at fixed topological charge},
 volume = {76},
 year = {2007}
}