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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Functional renormalization group for multilinear disordered Langevin dynamics II:Revisiting the p = 2 spin dynamics for Wigner and Wishart ensembles [PDF]
Journal of Physics Communications, 2022 In this paper, we investigate the large-time behavior for a slightly modified version of the standard p = 2 soft spins dynamics model, including a quartic or higher potential. The equilibrium states of such a model correspond to an effective field theory,
Vincent Lahoche +2 more
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Critical phenomena and functional renormalization group
He jishu, 2023 Recent progress in studies on quantum chromodynamics (QCD) phase transition and related critical phenomena within the functional renormalization group (fRG) approach were reviewed, including the nonperturbative critical exponents and baryon number ...
YIN Shi, TAN Yangyang, FU Weijie
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Regulator dependence in the functional renormalization group: A quantitative explanation. [PDF]
Physical Review E, 2022 The search for controlled approximations to study strongly coupled systems remains a very general open problem. Wilson's renormalization group has shown to be an ideal framework to implement approximations going beyond perturbation theory. In particular,
G. De Polsi, N. Wschebor
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