54 citations · 153 across the 6 of their papers we have counts for
6 papers
A Simple Proof of the Kochen-Specker Theorem on the Problem of Hidden Variables
Norbert Straumann
In this talk I present a simple derivation of an old result of Kochen and Specker, which is apparently unrelated to the famous work of Bell on hidden variables, but is presumably e…
Giant Arc Statistics and Cosmological Parameters
R. Kaufmann, N. Straumann
We study with semi-analytical methods the statistics of pronounced arcs caused by lensing of galaxies by foreground galaxy clusters. For the number density and redshift distributio…
On rotational excitations and axial deformations of BPS monopoles and Julia-Zee dyons
M. Heusler, N. Straumann, M. Volkov
It is shown that Julia-Zee dyons do not admit slowly rotating excitations. This is achieved by investigating the complete set of stationary excitations which can give rise to non-v…
Rotating solitons and non-rotating, non-static black holes
O. Brodbeck, M. Heusler, N. Straumann +1
It is shown that the non-Abelian black hole solutions have stationary generalizations which are parameterized by their angular momentum and electric Yang-Mills charge. In particula…
Stability Analysis of New Solutions of the EYM system with Cosmological Constant
O. Brodbeck, M. Heusler, G. Lavrelashvili N. Straumann +1
We analyze the stability properties of the purely magnetic, static solutions to the Einstein--Yang--Mills equations with cosmological constant. It is shown that all three classes o…
Instability of Gravitating Sphalerons
P. Boschung, O. Brodbeck, F. Moser +2
We prove the instability of the gravitating regular sphaleron solutions of the Einstein-Yang-Mills-Higgs system with a Higgs doublet, by studying the frequency spectrum of…