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107 papers · 1 filter
Beyond the poor man's implementation of unconditionally stable algorithms to solve the time-dependent Maxwell Equations
J. S. Kole, M. T. Figge, H. De Raedt
For the recently introduced algorithms to solve the time-dependent Maxwell equations (see Phys.Rev.E Vol.64 p.066705 (2001)), we construct a variable grid implementation and an imp…
Elastic interaction and superstructures in manganites and other Jahn-Teller systems
D. I. Khomskii, K. I. Kugel
The role of elastic interactions between Jahn-Teller ions in formation of various orbital- and charge-ordered structures in manganites and related compounds is analyzed. It is show…
Massive Dualities in Six Dimensions
K. Behrndt, E. Bergshoeff, D. Roest +1
We study compactifications of string theory and M-theory to six dimensions with background fluxes. The nonzero fluxes lead to additional mass parameters. We derive the S- and T-dua…
Quantum oscillations without quantum coherence
V. V. Dobrovitski, H. A. De Raedt, M. I. Katsnelson +1
We study numerically the damping of quantum oscillations and the increase of entropy with time in model spin systems decohered by a spin bath. In some experimentally relevant cases…
Infinitely many states and stochastic symmetry in a Gaussian Potts-Hopfield model
A. C. D. van Enter, H. G. Schaap
We study a Gaussian Potts-Hopfield model. Whereas for Ising spins and two disorder variables per site the chaotic pair scenario is realized, we find that for q-state Potts spins [{…
Ongoing massive star formation in the bulge of M51
H. J. G. L. M. Lamers, N. Panagia, S. Scuderi +4
We studied the HST-WFPC2 observations of the inner kpc of the interacting galaxy M51 in six bands from 2550 to 8140 Angstrom. The images show an oval shaped area ("bulge") of 11x16…