LANGEVIN APPROACH TO NUCLEAR DISSIPATIVE DYNAMICS
نویسندگان
چکیده
منابع مشابه
Langevin Approach to Nuclear Dissipative Dynamics
Langevin approach is proposed as an intuitive phenomenological framework to describe nuclear dissipative phenomena such as heavy ion reactions and fission decay. We present a method to integrate Langevin equation directly with the computer-simulated langevin force. Examples are given for a free motion of Brownian particle and for nuclear fission as a diffusion over a barrier.
متن کاملDissipative Quantum Tunneling : Quantum Langevin Equation Approach
The quantum Langevin equation is used as the basis for a discussion of dissipative quantum tunneling. A general analysis, including strong coupling and non-markovian (memory) effects, is given for the case oftunneling through a parabolic barrier at zero temperature in the presenceof linear passive dissipation. It is shown that dissipation always decreases the tunneling rate below the barrier an...
متن کاملAn alternative approach to dissipative particle dynamics
– We describe a simulation method based on combining the ideas behind Andersen’s thermostat and dissipative particle dynamics (DPD). The result is a Galilean invariant thermostat that conserves momentum and enhances viscosity. It therefore displays the same characteristics as DPD. Our method differs primarily in that it satisfies detailed balance by construction. If a simple scheme is used to s...
متن کاملAnalysis of Boltzmann - Langevin dynamics in nuclear matter ∗
The Boltzmann-Langevin dynamics of harmonic modes in nuclear matter is analyzed within linear-response theory, both with an elementary treatment and by utilizing the frequency-dependent response function. It is shown how the source terms agitating the modes can be obtained from the basic BL correlation kernel by a simple projection onto the associated dual basis states, which are proportional t...
متن کاملThe quantum-jump approach to dissipative dynamics in quantum optics
Dissipation, the irreversible loss of energy and coherence, from a microsystem is the result of coupling to a much larger macrosystem (or reservoir) that is so large that one has no chance of keeping track of all of its degrees of freedom. The microsystem evolution is then described by tracing over the reservoir states, which results in an irreversible decay as excitation leaks out of the initi...
متن کاملذخیره در منابع من
با ذخیره ی این منبع در منابع من، دسترسی به آن را برای استفاده های بعدی آسان تر کنید
ژورنال
عنوان ژورنال: Le Journal de Physique Colloques
سال: 1986
ISSN: 0449-1947
DOI: 10.1051/jphyscol:1986436