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arXiv math-ph/0301025math-phmath.MP
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关于非线性量子Boltzmann方程推导的几点思考

Some Considerations on the derivation of the nonlinear Quantum Boltzmann Equation

D. Benedetto, F. Castella, R. Esposito, M. Pulvirenti

摘要:

在本文中,我们分析了一个系统的N个全同量子粒子在弱耦合制度。用微扰级数表示单粒子约化密度矩阵的Wigner变换随时间的演化。展开式是通过迭代Duhamel公式得到的。在短时间内,我们严格证明了后者的一个子序列,收敛到玻尔兹曼方程的解,这是物理相关的上下文中。特别是,我们恢复的过渡率,因为它是预测费米的黄金法则。然而,我们不能证明,忽略的数量,同时保留一个完整的原始微扰展开的子系列,确实消失在极限:我们只给在这个方向上的可验证性参数。本研究适用于任何大于2的空间维度。

英文摘要:

In this paper we analyze a system of N identical quantum particles in a weak-coupling regime. The time evolution of the Wigner transform of the one-particle reduced density matrix is represented by means of a perturbative series. The expansion is obtained upon iterating the Duhamel formula. For short times, we rigorously prove that a subseries of the latter, converges to the solution of the Boltzmann equation which is physically relevant in the context. In particular, we recover the transition rate as it is predicted by Fermi's Golden Rule. However, we are not able to prove that the quantity neglected while retaining a subseries of the complete original perturbative expansion, indeed vanishes in the limit: we only give plausibility arguments in this direction. The present study holds in any space dimension greater than 2.

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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