217 citations · 2.7k across the 77 of their papers we have counts for
18 papers · 1 filter
Amplified Fermion Production from Overpopulated Bose Fields
J. Berges, D. Gelfand, D. Sexty
We study the real-time dynamics of fermions coupled to scalar fields in a linear sigma model, which is often employed in the context of preheating after inflation or as a low-energ…
Gauge turbulence, topological defect dynamics, and condensation in Higgs models
Thomas Gasenzer, Larry McLerran, Jan M. Pawlowski +1
The real-time dynamics of topological defects and turbulent configurations of gauge fields for electric and magnetic confinement are studied numerically within a 2+1D Abelian Higgs…
Over-populated gauge fields on the lattice
J. Berges, S. Schlichting, D. Sexty
We study nonequilibrium dynamics of SU(2) pure gauge theory starting from initial over-population, where intense classical gauge fields are characterized by a single momentum scale…
Bose condensation far from equilibrium
J. Berges, D. Sexty
The formation of Bose condensates far from equilibrium can play an important role in our understanding of collision experiments of heavy nuclei or for the evolution of the early un…
Out of equilibrium dynamics of coherent non-abelian gauge fields
J. Berges, S. Scheffler, S. Schlichting +1
We study out-of-equilibrium dynamics of intense non-abelian gauge fields. Generalizing the well-known Nielsen-Olesen instabilities for constant initial color-magnetic fields, we in…
Charge separation in Reheating after Cosmological Inflation
Thomas Gasenzer, Boris Nowak, Denes Sexty
New aspects of parametrically resonant heating of a relativistic scalar O(2)-symmetric self-interacting field are presented. This process is a candidate for reheating at the end of…
Strong versus weak wave-turbulence in relativistic field theory
J. Berges, D. Sexty
Nonthermal scaling phenomena can exhibit a characteristic dependence on the dimensionality d of space. For d=3 and 4 we simulate a relativistic scalar field theory on a lattice and…
Simulating plasma instabilities in SU(3) gauge theory
J. Berges, D. Gelfand, S. Scheffler +1
We compute nonequilibrium dynamics of plasma instabilities in classical-statistical lattice gauge theory in 3+1 dimensions. The simulations are done for the first time for the SU(3…
Turbulence in nonabelian gauge theory
J. Berges, S. Scheffler, D. Sexty
Kolmogorov wave turbulence plays an important role for the thermalization process following plasma instabilities in nonabelian gauge theories. We show that classical-statistical si…
Bottom-up isotropization in classical-statistical lattice gauge theory
J. Berges, S. Scheffler, D. Sexty
We compute nonequilibrium dynamics for classical-statistical SU(2) pure gauge theory on a lattice. We consider anisotropic initial conditions with high occupation numbers in the tr…
Chern-Simons and Winding Number in a Tachyonic Electroweak Transition
Meindert van der Meulen, Denes Sexty, Jan Smit +1
We investigate the development of winding number and Chern-Simons number in a tachyonic transition in the SU(2) Higgs model, motivated by the scenario of cold electroweak baryogene…
Quasi-Particle Excitations of the Higgs Vacuum at Finite Energy Density
A. Patkos, D. Sexty
Real time excitations in the broken symmetry phase of the classical Abelian Higgs model are investigated numerically in the unitary gauge. Spectral equations of state of its consti…
Prethermalisation and the Build Up of the Higgs Effect
D. Sexty, A. Patkos
Real time field excitations in the broken symmetry phase of the classical abelian Gauge+Higgs model are studied numerically in the unitary gauge, for systems starting from the unst…
Non-Gaussian Finite Temperature Statistics of the Longitudinal Gauge Excitation of the Higgs Vacuum
D. Sexty, A. Patkos
Real time excitations in the broken symmetry phase of the classical Abelian Higgs model are investigated numerically in the unitary gauge. Persistent correlation is detected at fin…
Non-equilibrium Goldstone phenomenon in tachyonic preheating
Sz. Borsanyi, A. Patkos, D. Sexty
The dominance of the direct production of elementary Goldstone waves is demonstrated in tachyonic preheating by numerically determining the evolution of the dispersion relation, th…
Nonequilibrium Goldstone phenomenon in Hybrid Inflation
Sz. Borsanyi, A. Patkos, D. Sexty
We study the onset of Goldstone phenomenon in a hybrid inflation scenario. The physically motivated range of parameters is analyzed in order to meet the cosmological constraints. C…
Goldstone excitations from spinodal instability
Sz. Borsanyi, A. Patkos, D. Sexty
The squared mass of a complex scalar field is turned dynamically into negative by its O(2)-invariant coupling to a real field slowly rolling down in a quadratic potential. The emer…
Ising-like dynamical signatures and the end-point of the QCD transition line
Sz. Borsanyi, A. Patkos, D. Sexty +1
An increase in the size of coherent domains in the one component field theory under the influence of a uniformly changing external magnetic field near the critical end-point…