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- Austrian Academy of SciencesAT55 papers
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13 papers · 1 filter
Lorentz Transformations from Reflections:Some Applications
H. K. Urbantke
We point out, by exhibiting two examples and mentioning a third one, that it is sometimes useful to consider Lorentz transformations as generated from hyperplane or line reflection…
Perturbed phase-space dynamics of hard-disk fluids
Christina Forster, Robin Hirschl, Harald A. Posch +1
The Lyapunov spectrum describes the exponential growth, or decay, of infinitesimal phase-space perturbations. The perturbation associated with the maximum Lyapunov exponent is stro…
The Structure of State Space with Respect to Imbedding
Heide Narnhofer
The entanglement of formation as well as the conditional entropy can be used to define leaves in the state space, given by a linear superposition of their extremal points. Examples…
Singlino-dominated Neutralinos in Extended Supersymmetric Models
S. Hesselbach, F. Franke
We adopt the SUSY benchmark scenario SPS 1a in supersymmetric models where the Higgs sector is extended by singlet superfields. We consider light neutralinos with dominant singlino…
Lyapunov instability and collective tangent space dynamics of fluids
Harald A. Posch, Christina Forster
The phase space trajectories of many body systems charateristic of simple fluids are highly unstable. We quantify this instability by a set of Lyapunov exponents, which are the rat…
Large-System Phase-Space Dimensionality Loss in Stationary Heat Flows
Harald A. Posch, William G. Hoover
Thermostated tethered harmonic lattices provide good illustrations of the phase-space dimensionality loss which occurs in the strange-attractor distributions characterizing station…