自旋岁差的非广延统计
Nonextensive statistics in spin precession
摘要：
许多实验利用捕获粒子在磁场中的进动来执行高精度测量。假设初始极化粒子自由旋进后，在旋进平面内形成高斯相位分布。我们发现，在磁场梯度和电场的存在下，被困的粒子往往会形成一个非高斯分布与幂律的尾巴，这是符合非广泛的统计。由于分布的确切形状取决于许多实验参数，因此它提供了一种直接测量它们的潜在新技术。
英文摘要：
Many experiments utilize the precession of trapped particles in magnetic fields to perform high precision measurements. It had been presumed that after free precession, initially polarized particles will form a Gaussian phase distribution in the plane of precession. We show that trapped particles in the presence of magnetic field gradients and electric fields will often form a non-Gaussian distribution with power-law tails which are consistent with nonextensive statistics. As the exact shape of the distribution depends upon many experimental parameters, it provides a potential new technique to directly measure them.
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