Feynman-Hellmann approach to transition matrix elements and quasidegenerate energy states
Feynman-Hellmann approach to transition matrix elements and quasidegenerate energy states
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过渡矩阵元素和准边生成能态的 Feynman-Hellmann 方法
DOI:
10.1103/physrevd.108.034507
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发表时间:
2023
影响因子:
5
通讯作者:
Batelaan M
中科院分区:
文献类型:
--
作者:
Batelaan M
The Feynman-Hellmann approach to computing matrix elements in lattice QCD by first adding a perturbing operator to the action is described using the transition matrix and the Dyson expansion formalism. This perturbs the energies in the two-point baryon correlation function, from which the matrix element can be obtained. In particular at leading order in the perturbation we need to diagonalize a matrix of near-degenerate energies. While the method is general for all hadrons, we apply it here to a study of a sigma to nucleon baryon transition vector matrix element.
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影响因子:
5
作者:
A. Chambers;R. Horsley;A. Schiller;H. Stüben;D. Pleiter;D. Pleiter;J. Zanotti;H. Perlt;Y. Nakamura;P. Rakow;G. Schierholz;R. Young
通讯作者:
A. Chambers;R. Horsley;A. Schiller;H. Stüben;D. Pleiter;D. Pleiter;J. Zanotti;H. Perlt;Y. Nakamura;P. Rakow;G. Schierholz;R. Young
影响因子:
--
作者:
K. U. Can;A. Hannaford;R. Horsley;Y. Nakamura;H. Perlt;P. Rakow;E. Sankey;G.Schierholz;H. Stuben;R. Young;J. Zanotti
通讯作者:
J. Zanotti
DOI:
10.1016/j.ppnp.2020.103771
发表时间:
2020-03
期刊:
arXiv: Nuclear Theory
影响因子:
--
作者:
V. Cirigliano;W. Detmold;A. Nicholson;P. Shanahan
通讯作者:
V. Cirigliano;W. Detmold;A. Nicholson;P. Shanahan
DOI:
--
发表时间:
1997
期刊:
影响因子:
--
作者:
C. Best;Meinulf Goeckeler;A. Schaefer;R. Horsley;E. Ilgenfritz;H. Perlt;A. Schiller;P. Rakow;G. Schierholz;S. Schramm
通讯作者:
S. Schramm
影响因子:
5
作者:
K. U. Can;A. Hannaford;R. Horsley;Y. Nakamura;H. Perlt;P. Rakow;G. Schierholz;K. Somfleth;H. Stüben;R. Young;J. Zanotti
通讯作者:
J. Zanotti