2007年9月
Finite volume QCD at fixed topological charge
PHYSICAL REVIEW D
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- ,
- ,
- 巻
- 76
- 号
- 5
- 記述言語
- 英語
- 掲載種別
- 研究論文(学術雑誌)
- DOI
- 10.1103/PhysRevD.76.054508
- 出版者・発行元
- AMER PHYSICAL SOC
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.
- リンク情報
- ID情報
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- DOI : 10.1103/PhysRevD.76.054508
- ISSN : 1550-7998
- Web of Science ID : WOS:000249786800040