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arXiv 2408.14767math.APmath-phmath.MP
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带屏蔽库仑势的量子多体动力学中一维 Vlasov-Poisson 方程的全局推导

Global derivation of the 1D Vlasov-Poisson equation from quantum many-body dynamics with screened Coulomb potential

Xuwen Chen, Shunlin Shen, Ping Zhang, Zhifei Zhang

AI总结:

研究带屏蔽库仑势的一维量子多体动力学,通过结合量子平均场、半经典和德拜长度极限,证明了一维 Vlasov-Poisson 方程的全局推导,并解决了相关守恒律开放问题的一维情形。

摘要:

我们在平均场设定下研究带屏蔽库仑势的一维量子多体动力学。结合量子平均场、半经典和德拜长度极限,我们证明了一维 Vlasov-Poisson 方程的全局推导。我们解决了由纯态数据带来的困难,其 Wigner 变换收敛到 Wigner 测度。我们找到了新的加权一致估计,并以此为基础构建了证明。因此,我们在全局上获得了更强的极限,从而得到了带此类 Wigner 测度数据的一维 Vlasov-Poisson 方程解的全局存在性。尽管是测度解,它们仍满足质量、动量和能量守恒定律。这恰好解决了 [18] 中 Diperna 和 Lions 提出的关于 Vlasov-Poisson 方程守恒律的开放问题的一维情形。

英文摘要:

We study the 1D quantum many-body dynamics with a screened Coulomb potential in the mean-field setting. Combining the quantum mean-field, semiclassical, and Debye length limits, we prove the global derivation of the 1D Vlasov-Poisson equation. We tackle the difficulties brought by the pure state data, whose Wigner transforms converge to Wigner measures. We find new weighted uniform estimates around which we build the proof. As a result, we obtain, globally, stronger limits, and hence the global existence of solutions to the 1D Vlasov-Poisson equation subject to such Wigner measure data, which satisfy conservation laws of mass, momentum, and energy, despite being measure solutions. This happens to solve the 1D case of an open problem regarding the conservation law of the Vlasov-Poisson equation raised in [18] by Diperna and Lions.

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。

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