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18 papers · 1 filter
Group quantization of parametrized systems II. Pasting Hilbert spaces
P. Hajicek, A. Higuchi, J. Tolar
The method of group quantization described in the preceeding paper I is extended so that it becomes applicable to some parametrized systems that do not admit a global transversal s…
Towards a perfect fixed point action for SU(3) gauge theory
T. DeGrand, A. Hasenfratz, P. Hasenfratz +2
We present an overview of the construction and testing of actions for SU(3) gauge theory which are approximate fixed points of renormalization group equations (at $β\rightarrow \in…
Group quantization of parametrized systems I. Time levels
P. Hajicek
A method of quantizing parametrized systems is developed that is based on a kind of ``gauge invariant'' quantities---the so-called perennials (a perennial must also be an ``integra…
Perfect topological charge for asymptotically free theories
M. Blatter, R. Burkhalter, P. Hasenfratz +1
The classical equations of motion of the perfect lattice action in asymptotically free spin and gauge models possess scale invariant instanton solutions. This property…
Detection of nuclear recoils in prototype dark matter detectors, made from Al, Sn and Zn Superheated Superconducting Granules
M. Abplanalp, C. Berger, G. Czapek +12
This work is part of an ongoing project to develop a Superheated Superconducting Granule (SSG) detector for cold dark matter and neutrinos. The response of SSG devices to nuclear r…
Decays in Chiral Perturbation Theory
Stefan Blaser
We evaluate the branching ratios for the decays at leading order in chiral perturbation theory and give an isospin relation for the decay rates.