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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Physical properties of the massive Schwinger model from the nonperturbative functional renormalization group [PDF]
Physical Review D, 2021 We investigate the massive Schwinger model in $d=1+1$ dimensions using bosonization and the nonperturbative functional renormalization group. In agreement with previous studies we find that the phase transition, driven by a change of the ratio $m/e ...
Patrick Jentsch +3 more
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Fermionic spectral functions with the functional renormalization group [PDF]
Physical Review D, 2018 We present first results on the calculation of fermionic spectral functions from analytically continued flow equations within the functional renormalization group approach. Our method is based on the same analytic continuation from imaginary to real frequencies that was developed and used previously for bosonic spectral functions.
Ralf-Arno Tripolt +4 more
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Operator product expansion coefficients from the nonperturbative functional renormalization group [PDF]
Physical Review D, 2021 Using the nonperturbative functional renormalization group (FRG) within the Blaizot-M\'endez-Galain-Wschebor approximation, we compute the operator product expansion (OPE) coefficient $c_{112}$ associated with the operators $\mathcal{O}_1\sim\varphi$ and
F. Rose, C. Pagani, N. Dupuis
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On ambiguities and divergences in perturbative renormalization group functions [PDF]
Journal of High Energy Physics, 2021 Abstract There is an ambiguity in choosing field-strength renormalization factors in the $$ \overline{\mathrm{MS}} $$ MS ¯ scheme starting from the 3-loop order in perturbation theory. More concerning, trivially choosing Hermitian factors
Florian Herren, Anders Eller Thomsen
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WAVE FUNCTIONALS, HAMILTONIANS AND THE RENORMALIZATION GROUP [PDF]
International Journal of Modern Physics A, 1996 We analyze the renormalization of wave functionals and energy eigenvalues in field theory. A general discussion of the canonical structure of the renormalization group equation is also given.
V. P. Nair, D.Minic
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Exact renormalization group for wave functionals
Progress of Theoretical and Experimental Physics, 2023 AbstractMotivated by the construction of continuum tensor networks for interacting field theories, which are relevant in understanding the emergence of space-time in the gauge/gravity correspondence, we derive a non-perturbative functional differential equation for wave functionals in scalar field theories from the exact renormalization group equation.
Kuwahara, Takaaki +3 more
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Limit of vanishing regulator in the functional renormalization group [PDF]
Physical Review D, 2021 The non-perturbative functional renormalization group equation depends on the choice of a regulator function, whose main properties are a "coarse-graining scale" $k$ and an overall dimensionless amplitude $a$. In this paper we shall discuss the limit $a\to0$ with $k$ fixed.
Baldazzi, Alessio +2 more
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Functional renormalization-group approach to decaying turbulence [PDF]
Journal of Statistical Mechanics: Theory and Experiment, 2013 39 pages, 25 ...
Andrei A. Fedorenko +2 more
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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 ...
D. G. C. McKeon +3 more
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