Flowing bosonization in the nonperturbative functional renormalization-group approach [PDF]
SciPost Physics, 2022 Bosonization allows one to describe the low-energy physics of one-dimensional quantum fluids within a bosonic effective field theory formulated in terms of two fields: the "density" field $\varphi$ and its conjugate partner, the phase $\vartheta$ of ...
Romain Daviet, Nicolas Dupuis
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Kagome Hubbard model from a functional renormalization group perspective [PDF]
Physical Review ResearchThe recent discovery of a variety of intricate electronic order in kagome metals has sprouted significant theoretical and experimental interest. From an electronic perspective on the potential microscopic origin of these phases, the most basic model is ...
Jonas B. Profe +7 more
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The spatial Functional Renormalization Group and Hadamard states on cosmological spacetimes [PDF]
Nuclear Physics B, 2022 A spatial variant of the Functional Renormalization Group (FRG) is introduced on (Lorentzian signature) globally hyperbolic spacetimes. Through its perturbative expansion it is argued that such a FRG must inevitably be state dependent and that it should ...
R. Banerjee, M. Niedermaier
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Critical phenomena in compressible polar active fluids: Dynamical and functional renormalization group studies [PDF]
Physical Review Research, 2023 Active matter is not only relevant to living matter and diverse nonequilibrium systems, but also constitutes a fertile ground for novel physics. Indeed, dynamic renormalization group (DRG) analyses have uncovered many new universality classes (UCs) in ...
Patrick Jentsch, Chiu Fan Lee
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Better integrators for functional renormalization group calculations [PDF]
The European Physical Journal B, 2022 We analyze a variety of integration schemes for the momentum space functional renormalization group calculation with the goal of finding an optimized scheme.
Jacob Beyer, Florian Goth, T. Müller
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Multiloop functional renormalization group approach to quantum spin systems [PDF]
Physical Review Research, 2022 Renormalization group methods are well-established tools for the (numerical) investigation of the low-energy properties of correlated quantum many-body systems, allowing us to capture their scale-dependent nature.
Dominik Kiese +4 more
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Evidence for a novel shift-symmetric universality class from the functional renormalization group [PDF]
Physics Letters B, 2023 Wetterich's equation provides a powerful tool for investigating the existence and universal properties of renormalization group fixed points exhibiting quantum scale invariance.
Cristobal Laporte +3 more
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Effective quantum spacetimes from functional renormalization group [PDF]
Physical Review DUsing the Functional Renormalization Group approach we construct effective quantum spacetime geometries by self-consistently deforming the classical Schwarzschild-de Sitter black-hole solution.
Alfio M. Bonanno +3 more
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Quantitative functional renormalization group description of the two-dimensional Hubbard model [PDF]
Physical Review Research, 2020 Using a leading algorithmic implementation of the functional renormalization group (fRG) for interacting fermions on two-dimensional lattices, we provide a detailed analysis of its quantitative reliability for the Hubbard model.
Cornelia Hille +7 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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