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arXiv · 1807.05673

One-body Langevin dynamics in heavy-ion collisions at intermediate energies

Hao Lin·Pawel Danielewicz
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Abstract

We present a new framework to treat the dissipation and fluctuation dynamics associated with nucleon-nucleon scattering in heavy-ion collisions. The two-body collision processes are effectively described in terms of the diffusion of nucleons in viscous nuclear media, governed by a set of Langevin equations in momentum space. The new framework combined with the usual mean field dynamics can be used to simulate heavy-ion collisions at intermediate energies. As a proof of principle, we simulate Au + Au reactions and obtain results consistent with other existing codes under the same constrained conditions. We also study the formation of fragments in Sn + Sn reactions at 50 MeV/nucleon, and results are discussed and compared with two other models commonly employed for collisions.

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Hao Lin, Pawel Danielewicz. 2018-07-16. One-body Langevin dynamics in heavy-ion collisions at intermediate energies. https://doi.org/10.1103/physrevc.99.024612

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