共查询到6条相似文献,搜索用时 0 毫秒
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Henryk Gzyl 《Journal of statistical physics》1982,29(3):617-622
We integrate by very simple means the Boltzmann equation in the relaxation time approximation. Our result improves on the solution previously found by Chambers, which does not take into account initial conditions. 相似文献
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给出运动空间区域中充满介质的情况下,以及运动空间区域中包含有介质和真空的情况下,矢量场的散度在运动空间区域中的体积分随时间变化率的两种计算方法.阐明了若以一种特别的方法来看待空间积分区域的变动,那么两种情况就可以用统一的方式来计算.指出在运动空间区域中包含有介质和真空的情况下,如果保留速度v在积分区域V的边界面S上的值和实际情况一样,而赋予区域V以一个其空间变化率连续或者分块连续的新的速度场v(r,t),那么锁定体元的计算方法仍然适用. 相似文献
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Jae-Kwan Shim 《Journal of Geometry and Physics》2003,44(4):475-480
In this paper, we address one of the questions raised by Rieffel in his collection of questions on deformation quantization. The question is whether the K-theory groups remain the same under flabby strict deformation quantizations. By “deforming” the question slightly, we produce a negative answer to the question. 相似文献