The conformal sector of Quantum Einstein Gravity beyond the local potential approximation
Physics Letters B, 2023 The anomalous scaling of Newton's constant around the Reuter fixed point is dynamically computed using the functional flow equation approach. Specifically, we thoroughly analyze the flow of the most general conformally reduced Einstein-Hilbert action ...
Alfio Bonanno +2 more
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Superfluidity in multicomponent fermions via the functional renormalization group
Nuclear Physics B, 2023 We reveal the critical properties of the phase transition towards superfluid order that has been proposed to occur in large spin fermionic systems. For this purpose, we consider the bosonic field theory for fluctuations of the complex skew-symmetric rank-
Michal Hnatič, Georgii Kalagov
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Fulfillment of sum rules and Ward identities in the multiloop functional renormalization group solution of the Anderson impurity model [PDF]
Physical Review Research, 2021 We investigate several fundamental characteristics of the multiloop functional renormalization group (mfRG) flow by hands of its application to a prototypical many-electron system: the Anderson impurity model (AIM).
Patrick Chalupa-Gantner +5 more
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Functional renormalization group for stochastic inflation [PDF]
Journal of Cosmology and Astroparticle Physics, 2018 We apply the functional renormalization group to Starobinsky's stochastic equation describing the local dynamics of a light scalar field in de Sitter. After elaborating on the over-damped regime of stochastic dynamics, we introduce an effective average action for the stochastic field, resulting by progressively integrating out frequencies, and study ...
Prokopec T, Rigopoulos G
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Rise and fall of plaquette order in the Shastry-Sutherland magnet revealed by pseudofermion functional renormalization group [PDF]
Physical review B, 2021 The Shastry-Sutherland model as a canonical example of frustrated magnetism has been extensively studied. The conventional wisdom has been that the transition from the plaquette valence bond order to the Neel order is direct and potentially realizes a ...
A. Keles, E. Zhao
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Functional renormalization group for multilinear disordered Langevin dynamics I Formalism and first numerical investigations at equilibrium [PDF]
Journal of Physics Communications, 2021 This paper aims at using the functional renormalization group formalism to study the equilibrium states of a stochastic process described by a quench–disordered multilinear Langevin equation.
Vincent Lahoche +2 more
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Bound states in functional renormalization group [PDF]
International Journal of Modern Physics A, 2019 Equivalence criteria are established for an effective Yukawa-type theory of composite fields representing two-particle fermion bound states with the original “microscopic” theory of interacting fermions based on the spectral decomposition of the 2-to-2 fermion scattering amplitude. Functional renormalization group equations of the effective theory are
Jakovac, A., Patkos, A.
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Functional-renormalization-group approach to strongly coupled Bose-Fermi mixtures in two dimensions [PDF]
Physical Review A, 2021 We study theoretically the phase diagram of strongly coupled two-dimensional Bose-Fermi mixtures interacting with attractive short-range potentials as a function of the particle densities. We focus on the limit where the size of the bound state between a
Jonas von Milczewski +2 more
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Functional renormalization group for d-wave superconductivity [PDF]
Physics Letters A, 2007 zbMATH Open Web Interface contents unavailable due to conflicting licenses.
H. C. Krahl, C. Wetterich
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Renormalization scheme dependence and the renormalization group beta function [PDF]
Physical Review D, 2017 16 pages, 1 figure, minor typos fixed and additional comments made; accepted at Physical Review ...
Chishtie, F. A., McKeon, D. G. C.
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