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Spin Fluctuations as a Probe of Nuclear Clustering

Published:Dec 30, 2025 08:41
1 min read
ArXiv

Analysis

This paper investigates how the alpha-cluster structure of light nuclei like Oxygen-16 and Neon-20 affects the initial spin fluctuations in high-energy collisions. The authors use theoretical models (NLEFT and alpha-cluster models) to predict observable differences in spin fluctuations compared to a standard model. This could provide a new way to study the internal structure of these nuclei by analyzing the final-state Lambda-hyperon spin correlations.
Reference

The strong short-range spin--isospin correlations characteristic of $α$ clusters lead to a significant suppression of spin fluctuations compared to a spherical Woods--Saxon baseline with uncorrelated spins.

Analysis

This paper investigates the breakdown of Zwanzig's mean-field theory for diffusion in rugged energy landscapes and how spatial correlations can restore its validity. It addresses a known issue where uncorrelated disorder leads to deviations from the theory due to the influence of multi-site traps. The study's significance lies in clarifying the role of spatial correlations in reshaping the energy landscape and recovering the expected diffusion behavior. The paper's contribution is a unified theoretical framework and numerical examples that demonstrate the impact of spatial correlations on diffusion.
Reference

Gaussian spatial correlations reshape roughness increments, eliminate asymmetric multi-site traps, and thereby recover mean-field diffusion.