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25 papers · 1 filter
Discrete structure of ultrathin dielectric films and their surface optical properties
S. V. Sukhov, K. V. Krutitsky
The boundary problem of linear classical optics about the interaction of electromagnetic radiation with a thin dielectric film has been solved under explicit consideration of its d…
Spin precession in disordered systems: Anomalous relaxation due to heavy tailed field distributions
Falk Scheffler, Philipp Maass
We investigate spin precession in the presence of randomly distributed field sources. Their fields h_i reorient by thermally activated transitions and decrease as r^{-mu} with the…
Orbit spaces of small tori
A. A'Campo-Neuen, J. Hausen
Consider an algebraic torus of small dimension acting on an open subset of a complex vector space, or more generally on a quasiaffine variety such that a separated orbit space exis…
Cosmic acceleration from effective forces?
Dominik J. Schwarz, Winfried Zimdahl, Alexander B. Balakin +1
Accelerated expansion of the Universe may result from an anti-frictional force that is self-consistently exerted on cold dark matter (CDM). Cosmic anti-friction is shown to give ri…
Dynamic percolation theory for particle diffusion in a polymer network
O. Durr, T. Volz, W. Dieterich +1
Tracer-diffusion of small molecules through dense systems of chain polymers is studied within an athermal lattice model, where hard core interactions are taken into account by mean…
Conformal Symmetry and Cosmological Entropy Production
Winfried Zimdahl, Alexander B. Balakin
Introducing an effective refraction index of an isotropic cosmic medium, we investigate the cosmological fluid dynamics which is consistent with a conformal, timelike symmetry of a…