406 citations
- Norwegian University of Science and TechnologyNO11 papers
- Technical University of DenmarkDK11 papers
- Umeå UniversitySE10 papers
- University of CopenhagenDK8 papers
- University of HelsinkiFI7 papers
- Institut für SonnenphysikDE6 papers
- Perimeter InstituteCA6 papers
- Aarhus UniversityDK5 papers
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11 papers · 1 filter
Resonating plaquette phase of a quantum six-vertex model
Olav F. Syljuasen, Sudip Chakravarty
The simplest quantum generalization of the six-vertex model describes fluctuations of the order parameter of the d-density wave (DDW), believed to compete with superconductivity in…
Uni-directional polymerization leading to homochirality in the RNA world
M. Nilsson, A. Brandenburg, A. C. Andersen +1
The differences between uni-directional and bi-directional polymerization are considered. The uni-directional case is discussed in the framework of the RNA world. Similar to earlie…
Searchability of Networks
M. Rosvall, A. Gronlund, P. Minnhagen +1
We investigate the searchability of complex systems in terms of their interconnectedness. Associating searchability with the number and size of branch points along the paths betwee…
Minimal tau approximation and simulations of the alpha effect
A. Brandenburg, K. Subramanian
The validity of a closure called the minimal tau approximation (MTA), is tested in the context of dynamo theory, wherein triple correlations are assumed to provide relaxation of th…
Stellar dynamo driven wind braking instead of disc coupling
Brigitta von Rekowski, Axel Brandenburg
Star-disc coupling is considered in numerical models where the stellar field is not an imposed perfect dipole, but instead a more irregular self-adjusting dynamo-generated field. U…
Cosmological constraints on string scale and coupling arising from tachyonic instability
Kari Enqvist, Asko Jokinen, Anupam Mazumdar +2
We demonstrate that string motivated inflation ending via tachyonic instability leaves a detectable imprint on the cosmic microwave background (CMB) radiation by virtue of the exci…