Microscopic description of nuclear vibrations: Relativistic QRPA and its extensions with quasiparticle-vibration coupling

TL;DR

This paper reviews the development of a relativistic quasiparticle-vibration coupling model within covariant energy density functional theory, enhancing the understanding of nuclear vibrations and damping mechanisms.

Contribution

It introduces a self-consistent relativistic QRPA framework with quasiparticle-vibration coupling, providing a more detailed description of nuclear vibrational damping.

Findings

Fragmentation of QRPA states observed

Enhanced damping description achieved

Framework applicable to nuclear structure studies

Abstract

The recent extensions of the covariant energy density functional theory with the quasiparticle-vibration coupling (QVC) are reviewed. Formulation of the Quasiparticle Random Phase Approximation (QRPA) in the relativistic framework is discussed. Self-consistent extensions of the relativistic QRPA imply the QVC which is implemented in two-body propagators in the nuclear medium. This provides fragmentation of the QRPA states describing the damping of the vibrational motion.