The nonperturbative functional renormalization group and its applications [PDF]
Physics Reports, 2020 v3) Review article, 93 pages + bibliography, 35 ...
N. Dupuis +6 more
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Pseudo-fermion functional renormalization group for spin models [PDF]
Reports 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
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Fermi-edge singularity and the functional renormalization group [PDF]
Journal of Physics: Condensed Matter, 2018 We study the Fermi-edge singularity, describing the response of a degenerate electron system to optical excitation, in the framework of the functional renormalization group (fRG).
Kugler, Fabian B., von Delft, Jan
core +6 more sources
Quark-meson model under rotation: A functional renormalization group study [PDF]
Physical 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
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Momentum-dependent quasiparticle properties of the Fermi polaron from the functional renormalization group [PDF]
Physical 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
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Functional Renormalization Group Study of Superconductivity in Rhombohedral Trilayer Graphene. [PDF]
Physical 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
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Reference results for the momentum space functional renormalization group [PDF]
European 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
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Competing instabilities of the extended Hubbard model on the triangular lattice: Truncated-unity functional renormalization group and application to moiré materials [PDF]
Physical 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
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Functional-renormalization-group approach to circuit quantum electrodynamics [PDF]
Physical Review A, 2022 A nonperturbative approach is developed to analyze superconducting circuits coupled to quantized electromagnetic continuum within the framework of the functional renormalization group.
Takeru Yokota, Kanta Masuki, Yuto Ashida
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Spin functional renormalization group for dimerized quantum spin systems [PDF]
Physical review B, 2022 We investigate dimerized quantum spin systems using the spin functional renormalization group approach proposed by Krieg and Kopietz [Phys. Rev. B 99 , 060403(R) (2019)] which directly focuses on the physical spin correlation functions and avoids the ...
Andreas Ruckriegel +3 more
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