Structure and flow of the nucleon eigenstates in lattice QCD

被引：39

作者：

Mahbub, M. Selim ^{[1
]}

Kamleh, Waseem ^{[1
]}

Leinweber, Derek B. ^{[1
]}

Moran, Peter J. ^{[1
]}

Williams, Anthony G. ^{[1
]}

机构：

[1] Univ Adelaide, Sch Chem & Phys, Special Res Ctr Subat Struct Matter, Adelaide, SA 5005, Australia

来源：

PHYSICAL REVIEW D | 2013年 / 87卷 / 09期

基金：

澳大利亚研究理事会;

关键词：

ROPER RESONANCE; EXCITED BARYONS; ELECTROPRODUCTION; MATRIX; MODEL;

D O I：

10.1103/PhysRevD.87.094506

中图分类号：

P1 [天文学];

学科分类号：

0704 ;

摘要：

A determination of the excited energy eigenstates of the nucleon, s = 1/2, I = 1/2, N+, is presented in full QCD using 2 + 1 flavor PACS-CS gauge configurations. The correlation-matrix method is used and is built using standard nucleon interpolators employing smearings at the fermion sources and sinks. We develop and demonstrate a new technique that allows the eigenvectors obtained to be utilized to track the propagation of the intrinsic nature of energy states from one quark mass to the next. This approach is particularly useful for larger dimension correlation matrices where more near-degenerate energy states can appear in the spectrum.

引用

页数：16

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