利用相关矩阵技术提取低激发λ共振
Extracting Low-Lying Lambda Resonances Using Correlation Matrix Techniques
摘要:
在ILDG提供的PACS-CS组态上,用(2+1)味全QCD研究了λ的最低负宇称态.我们表明,使用多个源和汇涂抹的变分分析可以提取一个躺在低于通过使用一个标准的固定涂抹源和汇运营商单独获得的状态。
英文摘要:
The lowest-lying negative-parity state of the Lambda is investigated in (2+1)-flavour full-QCD on the PACS-CS configurations made available through the ILDG. We show that a variational analysis using multiple source and sink smearings can extract a state lying lower than that obtained by using a standard fixed smeared source and sink operator alone.
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