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26 papers · 1 filter
The strange-quark mass from QCD sum rules in the pseudoscalar channel
C. A. Dominguez, L. Pirovano, K. Schilcher
QCD Laplace transform sum rules, involving the axial-vector current divergences, are used in order to determine the strange quark mass. The two-point function is known in QCD up to…
Stationary and static cylindrically symmetric Einstein spaces of the Lewis form
M. A. H. MacCallum, N. O. Santos
The derivation of the general solutions for stationary and static cylindrically symmetric Einstein spaces of Lewis form is revisited and the physical and geometrical meaning of the…
Thermal Model Analysis of Particle Ratios at GSI Ni-Ni Experiments Using Exact Strangeness Conservation
J. Cleymans, D. Elliott, A. Keranen +1
The production of hadrons in Ni-Ni at the GSI is considered in a hadronic gas model with chemical equilibrium. Special attention is given to the abundance of strange particles whic…
Averaging in Cosmology
Jelle Boersma
In this paper we discuss the effect of local inhomogeneities on the global expansion of nearly FLRW universes, in a perturbative setting. We derive a generic linearized averaging o…
Understanding the Cool DA White Dwarf, G29-38
S. J. Kleinman, R. E. Nather, D. E. Winget +37
The white dwarfs are promising laboratories for the study of cosmochronology and stellar evolution. Through observations of the pulsating white dwarfs, we can measure their interna…
Deviation of geodesics in FLRW spacetime geometries
George F R Ellis, Henk van Elst
The geodesic deviation equation (`GDE') provides an elegant tool to investigate the timelike, null and spacelike structure of spacetime geometries. Here we employ the GDE to review…