库仑晶体剪切模量的分子动力学模拟
Molecular Dynamics Simulation of Shear Moduli for Coulomb Crystals
摘要：
在磁星巨耀斑的准周期振荡中可能观测到中子星的扭（剪）振。这些模态的频率依赖于中子星地壳的剪切模量。我们用分子动力学模拟计算了库仑晶体的剪切模量。我们发现，电子屏蔽减少了约10%的剪切模量相比，以前的绪方等人。结果。我们的MD模拟可以扩展到计算杂质和/或多晶结构对剪切模量的影响。
英文摘要：
Torsional (shear) oscillations of neutron stars may have been observed in quasiperiodic oscillations of Magnetar Giant Flares. The frequencies of these modes depend on the shear modulus of neutron star crust. We calculate the shear modulus of Coulomb crystals from molecular dynamics simulations. We find that electron screening reduces the shear modulus by about 10% compared to previous Ogata et al. results. Our MD simulations can be extended to calculate the effects of impurities and or polycrystalline structures on the shear modulus.
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