Thermal QRPA equations with finite rank separable approximation for residual forces based on the Skyrme type interactions

TL;DR

This paper extends the finite rank separable approximation for Skyrme interactions to finite temperatures using TFD formalism, enabling the study of charge-exchange excitations in hot nuclei with the Thermal QRPA method.

Contribution

It introduces a finite temperature extension of the QRPA equations with a separable approximation for residual forces based on Skyrme interactions.

Findings

Formulas for charge-exchange strength distributions at finite temperature

Extension of QRPA to include thermal effects in hot nuclei

Framework for analyzing charge-exchange excitations in nuclear physics

Abstract

The approach to study properties of charge-exchange excitations in hot nuclei is presented. The approach is based on the extension of the finite rank separable approximation for Skyrme interactions to finite temperatures employing the TFD formalism. We present the formulae to obtain charge-exchange strength distributions within the Thermal Quasiparticle Random Phase Approximation (TQRPA).