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有限重子密度下核意面态的粘弹性和热响应

Viscoelastic and thermal response on nuclear pasta states at finite baryon density

Nicolás Grandi, Scarlett Rebolledo, Aldo Vera

arXiv 2607.18463首次发表:更新:

AI 中文总结

研究有限重子密度下核意面态的粘弹性和热响应,用3 + 1维Skyrme模型解析解描述,在低温下用1 + 1维无质量自由标量场理论,通过格林 - 库博公式计算相关系数并与现有结果比较。

AI 中文摘要

我们计算了有限重子密度下非均匀强子凝聚体的粘弹性和热响应,这些凝聚体代表重子管和层的晶体。我们用3 + 1维Skyrme模型的解析解将其描述为微扰方法的基态。在足够低的温度下,最低能量激发由1 + 1维的无质量自由标量场理论描述。我们将格林 - 库博公式应用于这些激发以获得弹性张量和其他响应系数。我们计算的解析结果与核意面相的现有结果进行了比较。

英文摘要

We compute the viscoelastic and thermal response of non-homogeneous hadronic condensates at finite baryon density representing crystals of baryonic tubes and layers. We describe them using analytic solutions of the Skyrme model in $3+1$ dimensions as ground states for a perturbative approach. At low enough temperatures, the lowest-energy excitations are described by a free massless scalar field theory in $1+1$ dimensions. We apply the Green-Kubo formulas to such excitations to obtain the elasticity tensor and other response coefficients. The analytic results of our computations are compared with available results on the nuclear pasta phase.

Comments37 pages, 2 figures

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