Functional Renormalization Group flows on Friedman-Lema\^{\i}tre-Robertson-Walker backgrounds [PDF]
, 2017 We reanalyze the construction of the gravitational functional renormalization group equation tailored to the Arnowitt-Deser-Misner formulation emphasizing its connection to the covariant formulation.
Platania, Alessia, Saueressig, Frank
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Anti-Newtonian Expansions and the Functional Renormalization Group
Universe, 2019 Anti-Newtonian expansions are introduced for scalar quantum field theories and classical gravity. They expand around a limiting theory that evolves only in time while the spatial points are dynamically decoupled.
Max Niedermaier
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Properties of the linearized functional renormalization group
Physical Review D, 2022 19 ...
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Introduction to the nonequilibrium functional renormalization group [PDF]
Nuclear Physics B - Proceedings Supplements, 2012 In these lectures we introduce the functional renormalization group out of equilibrium. While in thermal equilibrium typically a Euclidean formulation is adequate, nonequilibrium properties require real-time descriptions. For quantum systems specified by a given density matrix at initial time, a generating functional for real-time correlation functions
David Mesterházy, Jürgen Berges
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Exploring the θ-vacuum structure in the functional renormalization group approach
Journal of High Energy Physics, 2022 We investigate the θ-vacuum structure and the ’t Hooft anomaly at θ = π in a simple quantum mechanical system on S 1 to scrutinize the applicability of the functional renormalization group (fRG) approach.
Kenji Fukushima +2 more
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Ultracold atoms and the Functional Renormalization Group
Nuclear Physics B - Proceedings Supplements, 2012 We give a self-contained introduction to the physics of ultracold atoms using functional integral techniques. Based on a consideration of the relevant length scales, we derive the universal effective low energy Hamiltonian describing ultracold alkali atoms.
Jan M. Pawlowski +3 more
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Functional renormalization group in Floquet space [PDF]
Physical Review B, 2016 16 pages, 9 ...
Volker Meden +2 more
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The spatial Functional Renormalization Group and Hadamard states on cosmological spacetimes
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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Functional renormalization group and Kohn–Sham scheme in density functional theory
Physics Letters B, 2018 Deriving accurate energy density functional is one of the central problems in condensed matter physics, nuclear physics, and quantum chemistry. We propose a novel method to deduce the energy density functional by combining the idea of the functional ...
Haozhao Liang, Yifei Niu, Tetsuo Hatsuda
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Nested Selves: Self‐Organization and Shared Markov Blankets in Prenatal Development in Humans
Topics in Cognitive Science, EarlyView., 2023 Abstract The immune system is a central component of organismic function in humans. This paper addresses self‐organization of biological systems in relation to—and nested within—other biological systems in pregnancy. Pregnancy constitutes a fundamental state for human embodiment and a key step in the evolution and conservation of our species. While not
Anna Ciaunica +3 more
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