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11 papers · 1 filter
Magnetic Field Inversion in Vortices in Multilayers
Stavros Theodorakis, Epameinondas Leontidis
We present a description of very dense vortex lattices in highly anisotropic multilayers, for high fields parallel to the layers. We show that a magnetic field inversion can occur…
Analytic vortex solutions in an unusual Mexican hat potential
Stavros Theodorakis
We introduce an unusual Mexican hat potential, a piecewise parabolic one, and we show that its vortex solutions can be found analytically, in contrast to the case of the standard P…
A critical comparison of different definitions of topological charge on the lattice
B. Alles, M. D'Elia, A. Di Giacomo +1
A detailed comparison is made between the field-theoretic and geometric definitions of topological charge density on the lattice. Their renormalizations with respect to continuum a…
Status of alpha_s determinations from the non-perturbatively renormalised three-gluon vertex
B. Alles, H. Panagopoulos, C. Parrinello +2
We demonstrate the feasibility of computing alpha_s from the lattice three-gluon vertex in the Landau gauge. Data from 16^4 and 24^4 quenched lattices at beta=6.0 are presented. Ou…
Three-Loop Results in QCD with Wilson Fermions
B. Alles, C. Christou, A. Feo +2
We calculate the third coefficient of the lattice beta function in QCD with Wilson fermions, extending the pure gauge results of Luescher and Weisz; we show how this coefficient mo…
One-flavour QCD at finite temperature
C. Alexandrou, A. Borici, A. Feo +4
We present results, for heavy to moderate quark masses, of a study of thermodynamic properties of 1-flavour QCD, using the multiboson algorithm. Finite-size scaling behaviour is st…