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Microscopic and Beyond-Mean-Field Constraints for a New Generation of Nuclear Energy Density Functionals

Abstract : Nuclear structure is subject to a major renewal linked with the development of radioactive ion beams (such as the SPIRAL 1 and 2 beams at GANIL). Mean-field and density-functional methods are among the best suited for studying nuclei produced at such facilities. The present work aims at demonstrating how existing functionals can be improved so as to exhibit a better predictive power in little-explored regions of the nuclear chart. We propose a better description of the isospin-dependence of the effective interaction, and examine the relevance of adding a tensor coupling. We also show how a new generation of functionals can be better constrained by considering results obtained beyond the mean-field approximation. Finally, we attempt establishing a link with the bare nucleon-nucleon potential for the description of pairing, thus participating in the construction of a non-empirical functional.
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https://tel.archives-ouvertes.fr/tel-00413766
Contributor : Thomas Lesinski <>
Submitted on : Wednesday, October 21, 2009 - 5:30:55 PM
Last modification on : Tuesday, November 19, 2019 - 2:43:09 AM
Long-term archiving on: : Wednesday, September 22, 2010 - 1:29:55 PM

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  • HAL Id : tel-00413766, version 2

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Thomas Lesinski. Microscopic and Beyond-Mean-Field Constraints for a New Generation of Nuclear Energy Density Functionals. Nuclear Theory [nucl-th]. Université Claude Bernard - Lyon I, 2008. English. ⟨tel-00413766v2⟩

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