Microscopic approaches for nuclear Many-Body dynamics: applications to nuclear reactions

Abstract

These lecture notes are addressed to PhD student and/or researchers who want a general overview of microscopic approaches based on mean-field and applied to nuclear dynamics. Our goal is to provide a good description of low energy heavy-ion collisions. We present both formal aspects and practical applications of the time-dependent Hartree-Fock (TDHF) theory. The TDHF approach gives a mean field dynamics of the system under the assumption that particles evolve independently in their self-consistent average field. As an example, we study the fusion of both spherical and deformed nuclei with TDHF. We also focus on nucleon transfer which may occur between nuclei below the barrier. These studies allow us to specify the range of applications of TDHF in one hand, and, on the other hand, its intrinsic limitations: absence of tunneling below the Coulomb barrier, missing dissipative effects and/or quantum fluctuations. Time-dependent mean-field theories should be improved to properly account for these effects. Several approaches, generically named "beyond TDHF" are presented which account for instance for pairing and/or direct nucleon-nucleon collisions. Finally we discuss recent progresses in exact ab-initio methods based on the stochastic mean-field concept.

55 pages. Lecture given at the "Joliot Curie" school, Maubuisson, september 17-22, 2007. A french version is available at http://www.cenbg.in2p3.fr/heberge/EcoleJoliotCurie/coursannee/cours/CoursSimenel.pdf

References in corpus (4)

• Quantum Calculation of Dipole Excitation in Fusion Reaction
• Fusion process studied with preequilibrium giant dipole resonance in time dependent Hartree-Fock theory
• Quantum calculations of Coulomb reorientation for sub-barrier fusion
• Collective response of nuclei: Comparison between experiments and extended mean-field calculations

Cited by in corpus (6)

• Low-Energy Heavy-Ion Reactions and the Skyrme Effective Interaction
• Two-body dissipation effect in nuclear fusion reactions
• Inhomogeneity growth in two-component fermionic systems
• Nuclear ground states in a consistent implementation of the time-dependent density matrix approach
• Quantum models of classical world
• The Universe at the MeV era: neutrino evolution and cosmological observables