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Continuum Study of Heavy Quark Diffusion
Thomas Neuhaus
We report on a lattice investigation of heavy quark momentum diffusion within the pure SU(3) plasma above the deconfinement transition with the quarks treated to leading order in t…
Critical point and scale setting in SU(3) plasma: An update
A. Francis, O. Kaczmarek, M. Laine +2
We explore a method developed in statistical physics which has been argued to have exponentially small finite-volume effects, in order to determine the critical temperature Tc of p…
Duality and scaling in 3-dimensional scalar electrodynamics
K. Kajantie, M. Laine, T. Neuhaus +2
Three-dimensional scalar electrodynamics, with a local U(1) gauge symmetry, is believed to be dual to a scalar theory with a global U(1) symmetry, near the phase transition point.…
The inverted XY universality of the superconductivity phase transition
Thomas Neuhaus, Arttu Rajantie, Kari Rummukainen
It has been conjectured that the phase transition in the Ginzburg-Landau theory is dual to the XY model transition. We study numerically a particular limit of the GL theory where t…
Critical behaviour of the Ginzburg-Landau model in the type II region
K. Kajantie, M. Laine, T. Neuhaus +2
We study the critical behaviour of the three-dimensional U(1) gauge+Higgs theory (Ginzburg-Landau model) at large scalar self-coupling λ(``type II region'') by measuring various co…
Finite size scaling analysis of compact QED
G. Arnold, Th. Lippert, Th. Neuhaus +1
We describe results of a high-statistics finite size scaling analysis of 4d compact U(1) lattice gauge theory with Wilson action at the phase transition point. Using a multicanonic…
O(2) symmetry breaking vs. vortex loop percolation
K. Kajantie, M. Laine, T. Neuhaus +2
We study with lattice Monte Carlo simulations the relation of global O(2) symmetry breaking in three dimensions to the properties of a geometrically defined vortex loop network. We…
Scaling of magnetic monopoles in the pure compact QED
J. Jersak, T. Neuhaus, H. Pfeiffer
In the pure U(1) lattice gauge theory with the Villain action we find that the monopole mass in the Coulomb phase and the monopole condensate in the confinement phase scale accordi…
Statistical mechanics of vortices from field theory
K. Kajantie, M. Laine, T. Neuhaus +2
We study with lattice Monte Carlo simulations the interactions and macroscopic behaviour of a large number of vortices in the 3-dimensional U(1) gauge+Higgs field theory, in an ext…
Scaling analysis of the magnetic monopole mass and condensate in the pure U(1) lattice gauge theory
J. Jersak, T. Neuhaus, H. Pfeiffer
We observe the power law scaling behavior of the monopole mass and condensate in the pure compact U(1) gauge theory with the Villain action. In the Coulomb phase the monopole mass…
Gauge-invariant strings in the 3d U(1)+Higgs theory
K. Kajantie, M. Laine, T. Neuhaus +3
We describe how the strings, which are classical solutions of the continuum three-dimensional U(1)+Higgs theory, can be studied on the lattice. The effect of an external magnetic f…
Study of the order of the phase transition in pure U(1) gauge theory with Villain action
J. Cox, T. Neuhaus, H. Pfeiffer
We address the question of the order of the deconfinement phase transition of four dimensional U(1) lattice gauge theory. Simulations of the Z-gauge theory dual to the Villain acti…
Universality of the gauge-ball spectrum of the four-dimensional pure U(1) gauge theory
J. Cox, J. Jersak, H. Pfeiffer +3
We continue numerical studies of the spectrum of the pure U(1) lattice gauge theory in the confinement phase, initiated in our previous work. Using the extended Wilson action $ S =…
Strongly coupled compact lattice QED with staggered fermions
J. Cox, W. Franzki, J. Jersák +2
We explore the compact U(1) lattice gauge theory with staggered fermions and gauge field action -\sum_P [β\cos(Θ_P) + γ\cos(2Θ_P)], both for dynamical fermions and in the quenched…
Gauge-ball spectrum of the four-dimensional pure U(1) gauge theory
J. Cox, W. Franzki, J. Jersak +3
We investigate the continuum limit of the gauge-ball spectrum in the four-dimensional pure U(1) lattice gauge theory. In the confinement phase we identify various states scaling wi…
Properties of the non-Gaussian fixed point in 4D compact U(1) lattice gauge theory
J. Cox, W. Franzki, J. Jersak +3
We examine selected properties of the gauge-ball spectrum and fermionic variables in the vicinity of the recently discussed non-Gaussian fixed point of 4D compact U(1) lattice gaug…
Critical Higgs Mass and Temperature Dependence of Gauge Boson Masses in the SU(2) Gauge-Higgs Model
F. Karsch, T. Neuhaus, A. Patkós +1
We study the effective 3-D SU(2) Gauge-Higgs model at finite temperature for Higgs-masses in the range from GeV up to GeV. The first order electroweak phase transition w…
Multicanonical Study of Continuum Physics in the D=2 Nonlinear Sigma Model
T. Neuhaus
Employing a variant of the Multicanonical Ensemble we study twisted spin configurations on periodic boxes in the nonlinear sigma model for -values inbetween …
Non-Gaussian fixed point candidates in the 4D compact U(1) gauge theories
W. Franzki, J. Jersak, C. B. Lang +1
Some interesting nonperturbative properties of the strongly coupled 4D compact U(1) lattice gauge theories, both without and with matter fields, are pointed out. We demonstrate tha…
Four-dimensional pure compact U(1) gauge theory on a spherical lattice
J. Jersak, C. B. Lang, T. Neuhaus
We investigate the confinement-Coulomb phase transition in the four-dimensional (4D) pure compact U(1) gauge theory on spherical lattices. The action contains the Wilson coupling b…
Non-Gaussian fixed point in four-dimensional pure compact U(1) gauge theory on the lattice
J. Jersak, C. B. Lang, T. Neuhaus
The line of phase transitions, separating the confinement and the Coulomb phases in the four-dimensional pure compact U(1) gauge theory with extended Wilson action, is reconsidered…
Compact lattice QED with Wilson fermions
A. Hoferichter, V. K. Mitrjushkin, M. Müller-Preussker +2
We study the phase structure and the chiral limit of compact lattice QED with Wilson fermions (both dynamical and quenched). We use the standard Wilson gauge action and also a…
Phase structure and chiral limit of compact lattice QED with Wilson fermions
A. Hoferichter, V. K. Mitrjushkin, M. Müller-Preussker +1
We study the phase structure and chiral limit of compact lattice QED with Wilson fermions (both dynamical and quenched). We use the standard Wilson action (WA) and also the mo…
The analysis of Polyakov loop and spin correlators in finite volumes
J. Engels, V. K. Mitrjushkin, T. Neuhaus
We derive an analytic expression for point to point correlation functions of the Polyakov loop based on the transfer matrix formalism. The contributions from the eigenvalues of the…