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arXiv 0901.1276nucl-th
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量子离壳层动力学方程的非定域形式

Nonlocal Form of Quantum Off-Shell Kinetic Equation

Yu. B. Ivanov, D. N. Voskresensky

摘要:

导出了一种新的非局部形式的离壳层动力学方程。虽然在形式适用性范围内等同于Kadanoff-Baym和Botermans-Malfliet公式,但它具有超出此范围的某些优势。它具有更准确的守恒律Noether数量比那些在Botermans-Malfliet制定。与此同时,非局部形式,类似于Botermans-Malfliet之一,允许应用测试粒子方法的数值解,这使得它实际的重离子碰撞的模拟。阐明了时空非定域性的物理意义。

英文摘要:

A new nonlocal form of the off-shell kinetic equation is derived. While being equivalent to the Kadanoff--Baym and Botermans--Malfliet formulations in the range of formal applicability, it has certain advantages beyond this range. It possesses more accurate conservation laws for Noether quantities than those in the Botermans--Malfliet formulation. At the same time the nonlocal form, similarly to the Botermans--Malfliet one, allows application of the test-particle method for its numerical solution, which makes it practical for simulations of heavy-ion collisions. The physical meaning of the time-space nonlocality is clarified.

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