arXivDaily arXiv每日学术速递 周一至周五更新
arXiv 1102.3139nlin.CDnlin.SI
收藏

耗散驱动类体育场台球中的能量衰减和费米加速度抑制

Decay of energy and suppression of Fermi acceleration in a dissipative driven stadium-like billiard

André Luís Prando Livorati, Iberê Luiz Caldas, Edson Denis Leonel

摘要:

利用标度论研究了耗散含时类体育场台球系统中非相互作用粒子系综的平均能量行为。系统的动力学行为由一个四维非线性映射描述。耗散是通过颗粒与运动边界之间的非弹性碰撞引入的。对于不同的初始速度和阻尼系数的组合,粒子的长时间动力学导致它们达到不同的最终能量状态,并访问不同的吸引子,这些吸引子随着耗散的变化而变化。粒子的平均能量的衰减,这是观察到的恢复系数和不同的初始速度的大范围内,使用缩放参数。由于该系统表现出无限的能量增长,在没有耗散的情况下,我们的耗散情况下的结果支持的原则,费米加速似乎不是一个结构稳定的现象。

英文摘要:

The behavior of the average energy for an ensemble of non-interacting particles is studied using scaling arguments in a dissipative time-dependent stadium-like billiard. The dynamics of the system is described by a four dimensional nonlinear mapping. The dissipation is introduced via inelastic collisions between the particles and the moving boundary. For different combinations of initial velocities and damping coefficients, the long time dynamics of the particles leads them to reach different states of final energy and to visit different attractors, which change as the dissipation is varied. The decay of the average energy of the particles, which is observed for a large range of restitution coefficients and different initial velocities, is described using scaling arguments. Since this system exhibits unlimited energy growth in the absence of dissipation, our results for the dissipative case give support to the principle that Fermi acceleration seem not to be a structurally stable phenomenon.

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。

↑