Chaoticity and Dissipation of Nuclear Collective Motion in a Classical Model

Details Chaoticity and Dissipation of Nuclear Collective Motion in a Classical Model Chaoticity and Dissipation of Nuclear Collective Motion in a Classical Model

1996-02-20

arxiv.org/abs/nucl-th/9602030v1

Physics

Nuclear Physics

Nuclear Theory

LateX, 11 pages, 7 figures available on request, to appear in the Proceedings of XXXIV Winter Meeting on Nuclear Physics, Borm

Scientific paper

We analyze the behavior of a gas of classical particles moving in a two-dimensional "nuclear" billiard whose multipole-deformed walls undergo periodic shape oscillations. We demonstrate that a single particle Hamiltonian containing coupling terms between the particles' motion and the collective coordinate induces a chaotic dynamics for any multipolarity, independently on the geometry of the billiard. The absence of coupling terms allows us to recover qualitatively the "wall formula" predictions. We also discuss the dissipative behavior of the wall motion and its relation with the order-to-chaos transition in the dynamics of the microscopic degrees of freedom.

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