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32 papers · 1 filter
Excitations of the static quark-antiquark system in several gauge theories
K. Jimmy Juge, Julius Kuti, Colin Morningstar
The spectrum of gluons in the presence of a static quark-antiquark pair is studied using Monte Carlo simulations on anisotropic space-time lattices. For very small quark-antiquark…
Lattice simulations of 2-colour QCD with Wilson fermions
Jon-Ivar Skullerud, Shinji Ejiri, Simon Hands +1
We report on the status of our simulations of two-colour QCD with two flavours of Wilson quarks, at nonzero chemical potential and diquark source. Preliminary results are presented…
SO(3) vs. SU(2) Yang-Mills theory on the lattice: an investigation at non-zero temperature
A. Barresi, G. Burgio, M. Muller-Preussker
The adjoint SU(2) lattice gauge theory in 3+1 dimensions with the Wilson plaquette action modified by a Z(2) monopole suppression term is reinvestigated with special emphasis on th…
Contact-induced spin polarization in carbon nanotubes
Mauro S. Ferreira, Stefano Sanvito
Motivated by the possibility of combining spintronics with molecular structures, we investigate the conditions for the appearance of spin-polarization in low-dimensional tubular sy…
Analytic Smearing of SU(3) Link Variables in Lattice QCD
Colin Morningstar, Mike Peardon
An analytic method of smearing link variables in lattice QCD is proposed and tested. The differentiability of the smearing scheme with respect to the link variables permits the use…
Spin Polaron Effective Magnetic Model for La_{0.5}Ca_{0.5}MnO_3
N. P. Konstantinidis, C. H. Patterson
The conventional paradigm of charge order for La_{1-x}Ca_xMnO_3 for x=0.5 has been challenged recently by a Zener polaron picture emerging from experiments and theoretical calculat…