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首页> 外文期刊>Nuclear Physics, A: Journal Devoted to the Experimental Study of the Fundamental Constituents of Matter and Their Actions >THE EXCITATION OF AN INDEPENDENT-PARTICLE GAS - CLASSICAL OR QUANTAL - BY A TIME-DEPENDENT POTENTIAL WELL
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THE EXCITATION OF AN INDEPENDENT-PARTICLE GAS - CLASSICAL OR QUANTAL - BY A TIME-DEPENDENT POTENTIAL WELL

机译：通过时间依赖的势阱激发独立或经典气体或量子气体

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A systematic numerical investigation of the excitation of a classical or quantal gas of non-interacting particles in a time-dependent potential well is described. The excitation energy was followed in time for one oscillation around the sphere for six types of deformation: spheroidal shapes and Legendre polynomial ripples P-2, P-3, P-4, P-5, P-6, with relative rms amplitudes of 0.2. Ten different speeds of deformation and eleven different values of the diffuseness of the potential well were studied, making altogether 660 quantal and 660 classical time-dependent calculations. In the upper range of deformation speeds the quantal results for the non-integrable shapes P-3-P-6 agree approximately with the wall formula for dissipation, the deviations being largely accounted for by the wave-mechanical suppression factor of Koonin et al. For low deformation speeds the dissipation becomes dominated by one or two avoided level crossings. [References: 36]
机译：描述了在时间相关势阱中非相互作用粒子的经典气体或定量气体激发的系统数值研究。紧随其后的是，激发能随时间在球体上发生一次振荡，产生了六种变形：球体形状和勒让德多项式波动P-2，P-3，P-4，P-5，P-6，相对均方根振幅为0.2。研究了十种不同的变形速度和十一种不同的势阱扩散值，总共进行了660次定量计算和660次经典时变计算。在变形速度的上限范围内，不可积分形状P-3-P-6的量化结果与耗散壁公式近似吻合，偏差主要由Koonin等人的波浪力学抑制因子引起。对于低变形速度，耗散由一个或两个避免的水平交叉占据主导地位。 [参考：36]

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