63 citations · 256 across the 10 of their papers we have counts for
11 papers
On spinodal points and Lee-Yang edge singularities
Xin An, David Mesterházy, Mikhail A. Stephanov
We address a number of outstanding questions associated with the analytic properties of the universal equation of state of the theory, which describes the critical behavior o…
Doubled Lattice Chern-Simons-Yang-Mills Theories with Discrete Gauge Group
Stephan Caspar, David Mesterházy, Therkel Z. Olesen +2
We construct doubled lattice Chern-Simons-Yang-Mills theories with discrete gauge group in the Hamiltonian formulation. Here, these theories are considered on a square spatial…
Functional renormalization group approach to the Yang-Lee edge singularity
Xin An, David Mesterházy, Mikhail A. Stephanov
We determine the scaling properties of the Yang-Lee edge singularity as described by a one-component scalar field theory with imaginary cubic coupling, using the nonperturbative fu…
Dynamics of dissipative Bose-Einstein condensation
Stephan Caspar, Florian Hebenstreit, David Mesterházy +1
We resolve the real-time dynamics of a purely dissipative quantum spin or, equivalently, hard-core boson model on a hypercubic -dimensional lattice. The considered qua…
Discovering and quantifying nontrivial fixed points in multi-field models
Astrid Eichhorn, Thomas Helfer, David Mesterházy +1
We use the functional renormalization group and the -expansion concertedly to explore multicritical universality classes for coupled vector-field models in…
From quantum to classical dynamics: The relativistic model in the framework of the real-time functional renormalization group
David Mesterházy, Jan H. Stockemer, Yuya Tanizaki
We investigate the transition from unitary to dissipative dynamics in the relativistic vector model with the interaction using the nonperturbative functional…
Stability of fixed points and generalized critical behavior in multifield models
Astrid Eichhorn, David Mesterházy, Michael M. Scherer
We study models with three coupled vector fields characterized by symmetry. Using the nonperturbative functional renormalization group, we deriv…
Lattice Monte Carlo methods for systems far from equilibrium
David Mesterházy, Luca Biferale, Karl Jansen +1
We present a new numerical Monte Carlo approach to determine the scaling behavior of lattice field theories far from equilibrium. The presented methods are generally applicable to…
Dynamic universality class of Model C from the functional renormalization group
David Mesterházy, Jan H. Stockemer, Leticia F. Palhares +1
We establish new scaling properties for the universality class of Model C, which describes relaxational critical dynamics of a nonconserved order parameter coupled to a conserved s…
Effect of short-range interactions on the quantum critical behavior of spinless fermions on the honeycomb lattice
D. Mesterházy, J. Berges, L. von Smekal
We present a functional renormalization group investigation of an Euclidean three-dimensional matrix Yukawa model with U(N) symmetry, which describes N = 2 Weyl fermions that effec…
Introduction to the nonequilibrium functional renormalization group
Jürgen Berges, David Mesterházy
In these lectures we introduce the functional renormalization group out of equilibrium. While in thermal equilibrium typically a Euclidean formulation is adequate, nonequilibrium p…