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The nonperturbative functional renormalization group and its applications [PDF]

open access: yesPhysics Reports, 2020
v3) Review article, 93 pages + bibliography, 35 ...
N. Dupuis   +6 more
semanticscholar   +8 more sources

Pseudo-fermion functional renormalization group for spin models [PDF]

open access: yesReports on progress in physics. Physical Society, 2023
For decades, frustrated quantum magnets have been a seed for scientific progress and innovation in condensed matter. As much as the numerical tools for low-dimensional quantum magnetism have thrived and improved in recent years due to breakthroughs ...
T. Müller   +7 more
semanticscholar   +1 more source

Quark-meson model under rotation: A functional renormalization group study [PDF]

open access: yesPhysical Review D, 2023
Rapid rotation may exist in physical systems such as non-central heavy ion collisions and neutron stars. Using functional renormalization group analysis of the quark-meson model, we investigate the effects of real and imaginary rotation on the chiral ...
Hao-Lei Chen   +2 more
semanticscholar   +1 more source

Momentum-dependent quasiparticle properties of the Fermi polaron from the functional renormalization group [PDF]

open access: yesPhysical Review A, 2023
We study theoretically the lifetimes of attractive and repulsive Fermi polarons, as well as the molecule at finite momentum in three dimensions. To this end, we develop a technique that allows for the computation of Green's functions in the whole complex
Jonas von Milczewski, Richard Schmidt
semanticscholar   +1 more source

Functional Renormalization Group Study of Superconductivity in Rhombohedral Trilayer Graphene. [PDF]

open access: yesPhysical Review Letters, 2022
We employ a functional renormalization group approach to ascertain the pairing mechanism and symmetry of the superconducting phase observed in rhombohedral trilayer graphene.
W. Qin   +5 more
semanticscholar   +1 more source

Reference results for the momentum space functional renormalization group [PDF]

open access: yesEuropean Physical Journal B : Condensed Matter Physics, 2022
The functional renormalization group (FRG), an established computational method for quantum many-body phenomena, has been subject to a diversification in topical applications, analytic approximations and numerical implementations.
Jacob Beyer, J. Hauck, Lennart Klebl
semanticscholar   +1 more source

Competing instabilities of the extended Hubbard model on the triangular lattice: Truncated-unity functional renormalization group and application to moiré materials [PDF]

open access: yesPhysical review B, 2022
A simple yet paradigmatic model for the interplay of strong electronic correlations and geometric frustration is the triangular lattice Hubbard model.
Nico Gneist, L. Classen, M. Scherer
semanticscholar   +1 more source

Functional renormalization group study of the two-dimensional Su-Schrieffer-Heeger-Hubbard model [PDF]

open access: yesPhysical review B, 2022
We study the Hubbard model on the square lattice coupled in addition to the optical Su-Schrieffer-Heeger (SSH) phonons, using the singular-mode functional renormalization group method. At half-filling and in the absence of the Hubbard interaction $U$, we
Qingqing Yang, Da Wang, Qiang-Hua Wang
semanticscholar   +1 more source

Critical Probability Distributions of the Order Parameter from the Functional Renormalization Group. [PDF]

open access: yesPhysical Review Letters, 2022
We show that the functional renormalization group (FRG) allows for the calculation of the probability distribution function of the sum of strongly correlated random variables.
I. Balog, A. Rançon, B. Delamotte
semanticscholar   +1 more source

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