Pairing fluctuations and gauge symmetry restoration in rotating superfluid nuclei

TL;DR

This paper investigates how pairing correlations and their fluctuations influence the rotational spectra and moments of inertia in rapidly rotating nuclei, highlighting the transition from superfluid to normal phases at high spins.

Contribution

It introduces an analysis of pairing fluctuations and gauge symmetry restoration effects in rotating superfluid nuclei, emphasizing their impact on nuclear rotational properties.

Findings

Pairing fluctuations significantly affect high-spin rotational spectra.

The transition from superfluid to normal phase involves dynamic pairing correlations.

Gauge symmetry restoration plays a crucial role in nuclear superfluidity at high angular momentum.

Abstract

Rapidly rotating nuclei provide us good testing grounds to study the pairing correlations; in fact, the transition from the superfluid to the normal phase is realized at high-spin states. The role played by the pairing correlations is quite different in these two phases: The static (BCS like mean-field) contribution is dominant in the superfluid phase, while the dynamic fluctuations beyond the mean-field approximation are important in the normal phase. The influence of the pairing fluctuations on the high-spin rotational spectra and moments of inertia is discussed.