arXivDaily arXiv每日学术速递 周一至周五更新
arXiv周末暂无论文更新,休息一下吧,周末愉快~~
arXiv 1609.04754math-phmath.MPquant-ph
收藏

平均场极限下库仑相互作用费米子的Hartree修正

Hartree Corrections in a Mean-field Limit for Fermions with Coulomb Interaction

Sören Petrat

摘要:

我们考虑了在平均场尺度限制下费米子与库仑相互作用的多体动力学,其中对于大粒子数,动能和势能是相同的。在所考虑的限制的平均场的空间变化是小的。我们证明了两个结果,这个标度极限。首先,由于变化很小,即,小的力量,我们表明,多体动力学可以近似的自由动力学与适当的相位因子与固定的最佳误差项。其次,我们证明了Hartree动力学给出了一个更好的近似与较小的误差项。在这个意义上,假设第一个结果中的误差项是最优的,我们从具有库仑相互作用的多体动力学中导出了平均场标度极限下的Hartree方程。

英文摘要:

We consider the many-body dynamics of fermions with Coulomb interaction in a mean-field scaling limit where the kinetic and potential energy are of the same order for large particle numbers. In the considered limit the spatial variation of the mean-field is small. We prove two results about this scaling limit. First, due to the small variation, i.e., small forces, we show that the many-body dynamics can be approximated by the free dynamics with an appropriate phase factor with the conjectured optimal error term. Second, we show that the Hartree dynamics gives a better approximation with a smaller error term. In this sense, assuming that the error term in the first result is optimal, we derive the Hartree equations from the many-body dynamics with Coulomb interaction in a mean-field scaling limit.

机构、总结、中文摘要均由AI分析而来,可能存在错误,请以论文正文为准。

↑