Is the isoscalar monopole resonance of the $\alpha$-particle a collective mode?
G. Orlandini, S. Bacca, N. Barnea, W. Leidemann
TL;DR
This paper reviews the possibility that the isoscalar monopole resonance in helium-4 is a collective breathing mode, analyzing the underlying arguments and evidence for this interpretation.
Contribution
It clarifies the theoretical and experimental arguments supporting the interpretation of the helium-4 monopole resonance as a collective mode.
Findings
Supports the collective mode interpretation of the resonance
Clarifies the theoretical framework for understanding the resonance
Highlights key experimental observations
Abstract
In this contribution we review and clarify the arguments which might allow the interpretation of the isoscalar monopole resonance of He as a collective breathing mode.
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