标题： 结构和巨单极共振的直接衰变 显示英文标题

标题： Structure and direct decay of Giant Monopole Resonances

摘要： 我们使用时间依赖能量密度泛函方法在线性响应 regime 中，在 RPA 层次上研究巨单极共振 (GMR) 的结构和直接衰变，在几个双幻数核中进行。 通过使用大坐标空间，对连续体的适当处理使得可以将核与发射的核子分开。 通过将强度函数分解为单独的单粒子量子数，研究了 GMR 的微观结构。 对 GMR 直接衰变产生的核子谱进行了类似的微观分解。 在这个巨共振的谐波图景中，通过将每个贡献按初始单粒子能量进行偏移，可以重建 GMR 强度函数。 RPA 残余相互作用将束缚的 1-粒子 1-空穴态耦合到未束缚态，允许 GMR 的全部衰变。 在本文中，我们旨在从相干的单粒子单空穴叠加中理解直接衰变机制，同时忽略更复杂的配置。 未来应使用时间依赖的超越平均场方法来扩展此方法。 显示英文摘要

摘要： We study structure and direct decay of the Giant Monopole Resonance (GMR) at the RPA level using the Time-Dependent Energy Density Functional method in the linear response regime in a few doubly-magic nuclei. A proper treatment of the continuum, through the use of large coordinate space, allows for a separation between the nucleus and its emitted nucleons. The microscopic structure of the GMR is investigated with the decomposition of the strength function into individual single-particles quantum numbers. A similar microscopic decomposition of the spectra of emitted nucleons by direct decay of the GMR is performed. In this harmonic picture of giant resonance, shifting every contribution by the initial single-particle energy allows to reconstruct the GMR strength function. The RPA residual interaction couples bound 1-particle 1-hole states to unbound ones, allowing for the total decay of the GMR. In this article, we then intend to get an understanding of the direct decay mechanism from coherent one-particle-one-hole superpositions, while neglecting more complex configurations. Time-dependent beyond mean-field approaches should be use, in the future, to extend this method.