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21 papers · 1 filter
Extragalactic Large-Scale Structures behind the Southern Milky Way. - I. Redshifts Obtained at the SAAO in the Hydra/Antlia Extension
Renee C. Kraan-Korteweg, Tony P. Fairall, Chantal Balkowksi
Spectroscopic observations have been carried out for galaxies in the Milky Way with the 1.9 m telescope of the South African Astronomical Observatory (SAAO). The galaxies were sele…
Phenomenological Analysis of a Dimension-Two Operator in QCD and its Impact on
C. A. Dominguez
Fits to the ARGUS data on hadronic decays of the tau-lepton, which determine the vector and axial-vector spectral functions, are used in order to determine the size of a dimension…
Deconfinement and Chiral-Symmetry Restoration in Finite Temperature QCD
C. A. Dominguez
QCD sum rules are based on the Operator Product Expansion of current correlators, and on QCD-hadron duality. An extension of this program to finite temperature is discussed. This a…
Integrability Conditions for Irrotational Dust with a Purely Electric Weyl Tensor: A Tetrad Analysis
W. M. Lesame, P. K. S. Dunsby, G. F. R. Ellis
All spacetimes for an irrotational collisionless fluid with a purely electric Weyl tensor, with spacetime curvature determined by the exact Einstein field equations, are shown to b…
Newtonian Evolution of the Weyl Tensor
G. F. R. Ellis, P. K. S. Dunsby
In an interesting recent paper on the growth of inhomogeneity through the effect of gravity [1], Bertschinger and Hamilton derive equations for the electric and magnetic parts of t…
Mass singularities in light quark correlators: the strange quark case
K. G. Chetyrkin, C. A. Dominguez, D. Pirjol +1
The correlators of light-quark currents contain mass-singularities of the form log(m^2/Q^2). It has been known for quite some time that these mass- logarithms can be absorbed into…