236 research outputs found
Lattice Gauge Fixing for Parameter Dependent Covariant Gauges
We propose a non-perturbative procedure to fix generic covariant gauges on
the lattice. Varying the gauge parameter, this gauge fixing provides a concrete
method to check numerically the gauge dependence of correlators measured on the
lattice. The new algorithm turns out to converge with a good efficiency. As a
preliminary physical result, we find a sensitive dependence of the gluon
propagator on the gauge parameter.Comment: 10 pages (LaTeX2e), 5 eps figure
Measurement of Cosmic Ray spectrum and Anisotropy with ARGO-YBJ
In this paper we report on the observation of the anisotropy of cosmic ray
arrival direction at different angular scales with ARGO-YBJ. Evidence of new
few-degree excesses throughout the sky region 195 R.A.
315 is presented for the first time. We report also on the
measurement of the light-component (p+He) spectrum of primary cosmic rays in
the range 5 - 200 TeV.Comment: Invited talk to the 3rd Galileo - Xu Guangqi meeting, October 11-15,
2011 Beijing (China
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