Joel R. Primack

TL;DR: In this paper, Weinberg's model of the weak and electromagnetic interactions of leptons was shown to be finite in this model, despite the high order of divergence of individual Feynman graphs.

Abstract: We discuss three arguments that the dark matter which dominates the present universe is not baryonic — based on excluding specific baryonic models, deuterium abundance, and the absence of small-angle fluctuations in the microwave background radiation. If the dark matter consists of elementary particles, it may be classified as hot (free streaming erases all but superclusterscale fluctuations), warm (free streaming erases fluctuations smaller than galaxies), or cold (free streaming is unimportant). We consider scenarios for galaxy formation in all three cases. We discuss several potential problems with the hot (neutrino) case: making galaxies early enough, with enough baryons, and without too much increase in Mtot/Mlum from galaxy to rich cluster scales. The reported existence of dwarf spheroidal galaxies with relatively heavy halos is a serious problem for both hot and warm scenarios. Zeldovich (n = 1) adiabatic initial fluctuations in cold dark matter (axions, or a heavy stable “ino”) appear to be lead to observed sizes and other properties of galaxies, and may also yield large scale structure such as voids and filaments.

TL;DR: In this paper, it was shown that the agreement between the conventional calculation of muon and experimental data imposes relations among the masses of the intermediate vector meson, the heavy leptons associated with the muon, and the Higgs scalar meson in the Georgi-Glashow model.

TL;DR: In this paper, the authors provided prescriptions to evaluate the dynamical mass of galaxies from kinematic measurements of stars or gas using analytic considerations and the VELA suite of cosmological zoom-in simulations at $z=1-5.

TL;DR: In this paper, the authors used the rotation curves of a sample of dark matter dominated dwarf and low surface brightness (LSB) late-type galaxies to study their radial mass distributions, and they found that the shape of the rotation curve is remarkably similar for all (both dwarf and LSB) galaxies in the sample, suggesting a self-similar density distribution of their dark matter (DM) halos.