Quantum Monte Carlo calculations of electroweak transition matrix elements in A=6,7 nuclei

被引：59

作者：

Pervin, Muslema ^{[1
]}

Pieper, Steven C. ^{[1
]}

Wiringa, R. B. ^{[1
]}

机构：

[1] Argonne Natl Lab, Div Phys, Argonne, IL 60439 USA

来源：

PHYSICAL REVIEW C | 2007年 / 76卷 / 06期

关键词：

D O I：

10.1103/PhysRevC.76.064319

中图分类号：

O57 [原子核物理学、高能物理学];

学科分类号：

070202 ;

摘要：

Green's function Monte Carlo (GFMC) calculations of magnetic dipole, electric quadrupole, Fermi, and Gamow-Teller transition matrix elements are reported for A=6,7 nuclei. The matrix elements are extrapolated from mixed estimates that bracket the relevant electroweak operator between variational Monte Carlo (VMC) and GFMC propagated wave functions. Because they are off-diagonal terms, two mixed estimates are required for each transition, with a VMC initial (final) state paired with a GFMC final (initial) state. The realistic Argonne nu(18) two-nucleon and Illinois-2 three-nucleon interactions are used to generate the nuclear states. In most cases we find good agreement with experimental data.

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页数：9

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