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51 papers · 1 filter
Light-quark dynamics
J. Gasser
I present introductory lectures on the use of effective field theory methods in QCD at low energies.
The Deconfinement Phase Transition of Sp(2) and Sp(3) Yang-Mills Theories in 2+1 and 3+1 Dimensions
K. Holland, M. Pepe, U. -J. Wiese
Some time ago, Svetitsky and Yaffe have argued that -- if the deconfinement phase transition of a (d+1)-dimensional Yang-Mills theory with gauge group G is second order -- it shoul…
Minimal assumption derivation of a Bell-type inequality
Gerd Grasshoff, Samuel Portmann, Adrian Wuethrich
John Bell showed that a big class of local hidden-variable models stands in conflict with quantum mechanics and experiment. Recently, there were suggestions that empirical adequate…
A New Method of Measuring 81Kr and 85Kr Abundances in Environmental Samples
X. Du, R. Purtschert, K. Bailey +7
We demonstrate a new method for determining the 81Kr/Kr ratio in environmental samples based upon two measurements: the 85Kr/81Kr ratio measured by Atom Trap Trace Analysis (ATTA)…
The pion mass in finite volume
Gilberto Colangelo, Stephan Dürr
We determine the relative pion mass shift due to the finite spatial extent of the box by means of two-flavor chiral perturbation theory and the one-particle Lüsc…
Two-Loop Vertices in Quantum Field Theory: Infrared Convergent Scalar Configurations
A. Ferroglia, G. Passarino, M. Passera +1
A comprehensive study is performed of general massive, scalar, two-loop Feynman diagrams with three external legs. Algorithms for their numerical evaluation are introduced and disc…