Addressing energy density functionals in the language of path-integrals II: Comparative study of functional renormalization group techniques applied to the (0+0)-D $O(N)$-symmetric $\varphi^{4}$-theory

Autor: Kilian Fraboulet, Jean-Paul Ebran

Publikováno v: Kilian Fraboulet

The present paper is the second of a series of publications that aim at investigating relevant directions to turn the nuclear energy density functional (EDF) method as an effective field theory (EFT). The EDF approach has known numerous successes in

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=arXiv_dedup_::ab4dc043bc5f6794b9b256c757ebac1e
http://arxiv.org/abs/2210.07748

Clustering in nuclei at finite temperature

Autor: Esra Yüksel, Florian Mercier, Jean-Paul Ebran, Elias Khan

Publikováno v: Phys.Rev.C
Phys.Rev.C, 2022, 106 (5), pp.054309. ⟨10.1103/PhysRevC.106.054309⟩

We investigate the localization and clustering features in $^{20}$Ne ($N=Z$) and neutron-rich $^{32}$Ne nuclei at zero and finite temperatures. The finite temperature Hartree-Bogoliubov theory is used with the relativistic density-dependent meson-nuc

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_dedup___::86eb03b663652fadf85e718d31d4a140
http://arxiv.org/abs/2207.13764

Taming nuclear complexity with a committee of multilayer neural networks

Autor: Jean-Paul Ebran, David Regnier, R. D. Lasseri, Antonin Penon

Publikováno v: Phys.Rev.Lett.
Phys.Rev.Lett., 2020, 124 (16), pp.162502. ⟨10.1103/PhysRevLett.124.162502⟩
Physical Review Letters
Physical Review Letters, American Physical Society, 2020, 124 (16), pp.162502. ⟨10.1103/PhysRevLett.124.162502⟩
Physical Review Letters, 2020, 124 (16), pp.162502. ⟨10.1103/PhysRevLett.124.162502⟩

International audience; We demonstrate that a committee of deep neural networks is capable of predicting the ground-state and excited energies of more than 1800 atomic nuclei with an accuracy akin to the one achieved by state-of-the-art nuclear energ

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_dedup___::dbf3a6ee5d52250a9c1ee2071e4809de
http://arxiv.org/abs/1910.04132

Combining symmetry breaking and restoration with configuration interaction: a highly accurate many-body scheme applied to the pairing Hamiltonian

Autor: D. Gambacurta, Thomas Duguet, Jean-Paul Ebran, Denis Lacroix, J. Ripoche

Publikováno v: Physical Review C
Physical Review C, 2017, 95, pp.014326. ⟨10.1103/PhysRevC.95.014326⟩
Physical Review C, American Physical Society, 2017, 95, pp.014326. ⟨10.1103/PhysRevC.95.014326⟩

Background: Ab initio many-body methods have been developed over the past ten years to address mid-mass nuclei... As progress in the design of inter-nucleon interactions is made, further efforts must be made to tailor many-body methods. Methods: We f

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_dedup___::8694766bba9a786295453b4baabb1291

Approches de type intégrale de chemin pour l'étude de systèmes quantiques à N corps fortement corrélés

Autor: Kilian Fraboulet

Publikováno v: Quantum Physics [quant-ph]. Université Paris-Saclay, 2021. English. ⟨NNT : 2021UPASP089⟩
Quantum Physics [quant-ph]. Université Paris-Saclay, 2021. English. ⟨NNT : ⟩
Kilian Fraboulet

The core of this thesis is the path-integral formulation of quantum field theory and its ability to describe strongly-coupled many-body systems of finite size. Collective behaviors can be efficiently described in such systems through the implementati

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_dedup___::f215c4fc008b1c94f5b98a42e8989fc0
https://theses.hal.science/tel-03771188