109 citations · 665 across the 27 of their papers we have counts for
11 papers · 1 filter
Juggling with Tensor Bases in Functional Approaches
Jens Braun, Andreas Geißel, Jan M. Pawlowski +2
Systematic expansion schemes in functional approaches require the inclusion of higher order vertices. These vertices are expanded in independent tensor bases with a rapidly increas…
Towards quantitative precision for QCD at large densities
Friederike Ihssen, Jan M. Pawlowski, Franz R. Sattler +1
QCD at large density reveals a rich phase structure, ranging from a potential critical end point and inhomogeneous phases or moat regimes to color superconducting ones with competi…
Scalar spectral functions from the spectral fRG
Jan Horak, Friederike Ihssen, Jan M. Pawlowski +2
We compute non-perturbative spectral functions in a scalar -theory in three spacetime dimensions via the spectral functional renormalisation group. This approach allows for th…
Numerical RG-time integration of the effective potential: Analysis and Benchmark
Friederike Ihssen, Franz R. Sattler, Nicolas Wink
We investigate the RG-time integration of the effective potential in the functional renormalization group in the presence of spontaneous symmetry breaking and its subsequent convex…
Local Discontinuous Galerkin for the Functional Renormalisation Group
Friederike Ihssen, Jan M. Pawlowski, Franz R. Sattler +1
We apply the Local Discontinuous Galerkin discretisation to flow equations of the O(N)-model in the Local Potential Approximation. The improved stability is directly observed by so…
Renormalised spectral flows
Jens Braun, Yong-rui Chen, Wei-jie Fu +11
We derive renormalised finite functional flow equations for quantum field theories in real and imaginary time that incorporate scale transformations of the renormalisation conditio…
On Gauge Consistency In Gauge-Fixed Yang-Mills Theory
Jan M. Pawlowski, Coralie S. Schneider, Nicolas Wink
We investigate BRST invariance in Landau gauge Yang-Mills theory with functional methods. To that end, we solve the coupled system of functional renormalisation group equations for…
On the complex structure of Yang-Mills theory
Jan Horak, Jan M. Pawlowski, Nicolas Wink
We consider the coupled set of spectral Dyson-Schwinger equations in Yang-Mills theory for ghost and gluon propagators, which gives us access to the ghost and gluon spectral functi…
Ghost spectral function from the spectral Dyson-Schwinger equation
Jan Horak, Joannis Papavassiliou, Jan M. Pawlowski +1
We compute the ghost spectral function in Yang-Mills theory by solving the corresponding Dyson-Schwinger equation for a given input gluon spectral function. The results encompass b…
Spectral functions in the -theory from the spectral DSE
Jan Horak, Jan M. Pawlowski, Nicolas Wink
We develop a non-perturbative functional framework for computing real-time correlation functions in strongly correlated systems. The framework is based on the spectral representati…
Finite temperature spectral functions in the O(N)-model
Jan M. Pawlowski, Nils Strodthoff, Nicolas Wink
We directly calculate spectral functions in the O(N)-model at finite temperature within the framework of the Functional Renormalization group. Special emphasis is put on a fully nu…