On the nature of nuclear dissipation, as a hallmark for collective dynamics
نویسندگان
چکیده
2 Linear response theory for collective motion 2.1 Intrinsic versus collective response 2.2 Collisional damping of nucleonic motion 2.3 The e ective coupling constant 2.4 Strength distributions 2.5 Transport coe cients and their dependence on T 2.5.1 Friction coe cients in zero frequency limit 2.6 The role of symmetries 2.6.1 Quasi-static properties and the "heat pole" 2.6.2 Consequences for friction 2.7 Provisional stock-taking
منابع مشابه
Towards microscopic dynamics of dissipation in nuclear collective motion
For getting some microscopic understanding of dissipative dynamics in nuclear collective motion in a more dynamical way, a system with three degrees of freedom is examined within the time-dependent Hartree-Fock theory. Exploiting the self-consistent collective coordinate (SCC) method, the total system is optimally devided into the collective and intrinsic subsystems. The energy dissipation proc...
متن کاملSuper operator Technique in Investigation of the Dynamics of a Two Non-Interacting Qubit System Coupled to a Thermal Reservoir
In this paper, we clarify the applicability of the super operator technique for describing the dissipative quantum dynamics of a system consists of two qubits coupled with a thermal bath at finite temperature. By using super operator technique, we solve the master equation and find the matrix elements of the density operator. Considering the qubits to be initially prepared in a general mixed st...
متن کاملA Stochastic Mean-Field Approach For Nuclear Dynamics
We propose a microscopic stochastic approach to improve description of nuclear dynamics beyond the mean-field approximation at low energies. It is shown that, for small amplitude fluctuations, the proposed model gives a result for the dispersion of a one-body observable that is identical to the result obtained previously through a variational approach. Furthermore, by projecting the proposed st...
متن کاملar X iv : n uc l - th / 9 50 70 34 v 1 2 1 Ju l 1 99 5 YCTP - N 1 - 95 January , 1995 Quantum Dissipation
We address the question of the microscopic origin of dissipation in collective motion of a quantum many–body system in the framework of a parametric random matrix approach to the intrinsic dynamics. We show that the fluctuation–dissipation theorem is generally violated and, moreover, energy diffusion has a markedly non– Gaussian character and the corresponding distribution has very long tails. ...
متن کاملOne-body dissipation and chaotic dynamics in a classical simulation of a nuclear gas
In order to understand the origin of one-body dissipation in nuclei, we analyze the behavior of a gas of classical particles moving in a two-dimensional cavity with nuclear dimensions. This ”nuclear” billiard has multipole-deformed walls which undergo periodic shape oscillations. We demonstrate that a single particle Hamiltonian containing coupling terms between the particles’ motion and the co...
متن کامل