The Long Journey from Ab Initio Calculations to Density Functional Theory for Nuclear Large Amplitude Collective Motion

Abstract

At present there are two vastly different ab initio approaches to the description of the the many-body dynamics: the Density Functional Theory (DFT) and the functional integral (path integral) approaches. On one hand, if implemented exactly, the DFT approach can allow in principle the exact evaluation of arbitrary one-body observable. However, when applied to Large Amplitude Collective Motion (LACM) this approach needs to be extended in order to accommodate the phenomenon of surface-hoping, when adiabaticity is strongly violated and the description of a system using a single (generalized) Slater determinant is not valid anymore. The functional integral approach on the other hand does not appear to have such restrictions, but its implementation does not appear to be straightforward endeavor. However, within a functional integral approach one seems to be able to evaluate in principle any kind of observables, such as the fragment mass and energy distributions in nuclear fission. These two radically approaches can likely be brought brought together by formulating a stochastic time-dependent DFT approach to many-body dynamics.

9 pages

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Cited by in corpus (10)

• Induced Fission of ${}^{240}$Pu within a Real-Time Microscopic Framework
• Review on the progress in nuclear fission
• Isovector Giant Dipole Resonance from the 3D Time-Dependent Density Functional Theory for Superfluid Nuclei
• Fission Dynamics of 240Pu from Saddle-to-Scission and Beyond
• Time-Dependent Density Functional Theory and the Real-Time Dynamics of Fermi Superfluids
• Generation and Dynamics of Quantized Vortices in a Unitary Fermi Superfluid
• Unitary evolution with fluctuations and dissipation
• Validating Simple Dynamical Simulations of the Unitary Fermi Gas
• Pure quantum extension of the semiclassical Boltzmann-Uehling-Uhlenbeck equation
• Restoring Broken Symmetries for Nuclei and Reaction Fragments