The present status of the Roper resonance in lattice QCD is reviewed. Some of the latest lattice results are discussed with particular emphasis on a large systematic error stemming from the finite size effect. These results suggest that the Roper resonance can be described by the simple three quark excitation of sizable extent.
|ジャーナル||Progress of Theoretical Physics Supplement|
|出版ステータス||Published - 2003|
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