31 citations · 94 across the 7 of their papers we have counts for
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Detecting inhomogeneous chiral condensation from the bosonic two-point function in the -dimensional Gross-Neveu model in the mean-field approximation
Adrian Koenigstein, Laurin Pannullo, Stefan Rechenberger +2
The phase diagram of the -dimensional Gross-Neveu model is reanalyzed for (non-)zero chemical potential and (non-)zero temperature within the mean-field approximation. By…
Bosonic fluctuations in the -dimensional Gross-Neveu(-Yukawa) model at varying and and finite
Jonas Stoll, Niklas Zorbach, Adrian Koenigstein +2
Using analogies between flow equations from the Functional Renormalization Group and flow equations from (numerical) fluid dynamics we investigate the effects of bosonic fluctuatio…
Numerical fluid dynamics for FRG flow equations: Zero-dimensional QFTs as numerical test cases. II. Entropy production and irreversibility of RG flows
Adrian Koenigstein, Martin J. Steil, Nicolas Wink +2
We demonstrate that the reformulation of renormalization group (RG) flow equations as non-linear heat equations has severe implications on the understanding of RG flows in general.…
Numerical fluid dynamics for FRG flow equations: Zero-dimensional QFTs as numerical test cases. III. Shock and rarefaction waves in RG flows reveal limitations of the limit in -type models
Martin J. Steil, Adrian Koenigstein
Using an -symmetric toy model QFT in zero space-time dimensions we discuss several aspects and limitations of the -expansion. We demonstrate, how slight modifica…
Numerical fluid dynamics for FRG flow equations: Zero-dimensional QFTs as numerical test cases. I. The model
Adrian Koenigstein, Martin J. Steil, Nicolas Wink +4
The functional renormalization group (FRG) approach is a powerful tool for studies of a large variety of systems, ranging from statistical physics over the theory of the strong int…