Výsledky vyhledávání - "Kilian Fraboulet"

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

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

Autor: Kilian Fraboulet, Jean-Paul Ebran

Publikováno v: Kilian Fraboulet

The energy density functional (EDF) method is currently the only microscopic theoretical approach able to tackle the entire nuclear chart. Nevertheless, it suffers from limitations resulting from its empirical character and deteriorating its reliabil

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_dedup___::9f7f65d432db680717b5d9a6eb6a1cac
http://arxiv.org/abs/2208.13044

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Single-boson exchange functional renormalization group application to the two-dimensional Hubbard model at weak coupling

Autor: Kilian Fraboulet, Sarah Heinzelmann, Pietro M. Bonetti, Aiman Al-Eryani, Demetrio Vilardi, Alessandro Toschi, Sabine Andergassen

Publikováno v: Kilian Fraboulet

Abstract We illustrate the algorithmic advantages of the recently introduced single-boson exchange (SBE) formulation for the one-loop functional renormalization group (fRG), by applying it to the two-dimensional Hubbard model on a square lattice. We

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_dedup___::884991f87511bc4b31f039b96685818a
http://arxiv.org/abs/2206.14478

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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

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