1 Probing mean field theory in the nuclear interior Bernard Frois CEA-DRT
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Transcript of 1 Probing mean field theory in the nuclear interior Bernard Frois CEA-DRT
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Celebrating Daniel Gogny
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A great friend
• Working with him and his group was a pleasure.
• We achieved a lot together.
• Great sense of humor. « Bon vivant »
• Very French, wonderful smile, cheerful.
• A sense of elegance and style
• An impressive smoker
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A great physicist
• Very sharp. World Class.
• Superb knowledge in Physics and Maths.
• Original, profound, intense in his work, perfectionist
• Liked to work at the blackboard
• A constellation of collaborators
• An artist …
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1950’s
Robert Hofstadter Nobel Prize in Electron scattering
1974Visitor at CEA –Saclay
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This figure gives a summary of the approximate charge density distributions found for various nuclei studied by electron scattering at Stanford University (R. Hofstadter)
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1960 – 1970
Bethe, Bruckner, Goldstone
Significant disagreement with experimental properties
of nuclear matter
1970: Orsay group plays a leading role in the new generation HF calculations and Vnn
Hans Bethe, Nobel Laureate
Marcel Veneroni « Le Maître » plays a central role.
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Is the shell model valid in the nuclear interior ?
Maria Goeppert-Mayer
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1975 – 1985« Teaming Up »
A wealth of high momentum electron scattering data measured at CEA-Saclay
A powerful interaction between Saclay and Bruyères
le Châtel groups
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Daniel Gogny develops his finite range force with his group and his HFB calculations in the 70’s
Daniel Gogny got the Prix Joliot-Curie in 1986
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1977High momentum electron at CEA-Saclay allowed for the first time to probe the fine details of the nucleus
Note that this is a classic interference experiment.Electrons one by one follow the interference pattern.Each electron wave interfers with itself.
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3s ?
3s
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Correlations deplete the valence orbit
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No problem in the nuclear interior.
Pauli principle blocks the strong NN interaction at short distances.
A problem of correlations at the fermi surface
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This body of work has provided firm benchmarks against which to test our understanding of the nuclear many-body
problems
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INPC98The young generation is ready