arXivDaily arXiv每日学术速递 周一至周五更新
arXiv周末暂无论文更新,休息一下吧,周末愉快~~
arXiv 1111.0359nucl-th
收藏

局部QRPA惯性质量大变形动力学的微观研究

Microscopic approach to large-amplitude deformation dynamics with local QRPA inertial masses

Koichi Sato, Nobuo Hinohara, Takashi Nakatsukasa, Masayuki Matsuo, Kenichi Matsuyanagi

摘要:

本文在绝热自洽集体坐标方法的基础上,发展了一种在微观上确定五维四极集体哈密顿量的新方法。该方法由约束Hartree-Fock-Bogoliubov(HFB)方程和局域QRPA(LQRPA)方程组成,后者是通常的准粒子无规相近似(QRPA)在非HFB平衡点上的推广。该方法的优点之一是计算的惯性函数中包含了平均场的时奇分量的贡献,而这一贡献在推转公式中被忽略了。我们说明了我们的方法适用于扁长形共存72氪和形状相变富中子铬同位素N=40左右。

英文摘要:

We have developed a new method for determining microscopically the fivedimensional quadrupole collective Hamiltonian, on the basis of the adiabatic self-consistent collective coordinate method. This method consists of the constrained Hartree-Fock-Bogoliubov (HFB) equation and the local QRPA (LQRPA) equations, which are an extension of the usual QRPA (quasiparticle random phase approximation) to non-HFB-equilibrium points, on top of the CHFB states. One of the advantages of our method is that the inertial functions calculated with this method contain the contributions of the time-odd components of the mean field, which are ignored in the widely-used cranking formula. We illustrate usefulness of our method by applying to oblate-prolate shape coexistence in 72Kr and shape phase transition in neutron-rich Cr isotopes around N=40.

机构、总结、中文摘要均由AI分析而来,可能存在错误,请以论文正文为准。

↑