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Physical Review E

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  1. Synchronization transitions on scale-free neuronal networks due to finite information transmission delays.

    Physical Review E 80(2 Pt 2):026206 (2009) PMID 19792230

    We investigate front propagation and synchronization transitions in dependence on the information transmission delay and coupling strength over scale-free neuronal networks with different average degrees and scaling exponents. As the underlying model of neuronal dynamics, we use the efficient Ru...
  2. Critical exponents for the homology of Fortuin-Kasteleyn clusters on a torus.

    Physical Review E 80(2 Pt 1):021130 (2009) PMID 19792100

    A Fortuin-Kasteleyn cluster on a torus is said to be of type {a,b},a,b in Z , if it is possible to draw a curve belonging to the cluster that winds a times around the first cycle of the torus as it winds -b times around the second. Even though the Q -Potts models make sense only for Q integers, ...
  3. Fokker-Planck equation in a wedge domain: anomalous diffusion and survival probability.

    Physical Review E 80(2 Pt 1):021131 (2009) PMID 19792101

    We obtain exact solutions and the survival probability for a Fokker-Planck equation subjected to the two-dimensional wedge domain. We consider a spatial dependence in the diffusion coefficient and the presence of external forces. The results show an anomalous spreading of the solution and, conse...
  4. Hydrodynamics of helical-shaped bacterial motility.

    Physical Review E 80(2 Pt 1):021921 (2009) PMID 19792165

    To reveal the underlying hydrodynamic mechanism for the directed propulsion of the bacterium Spiroplasma, we formulate a coarse-grained elastic polymer model with domains of alternating helicities along the contour. Using hydrodynamic simulations and analytic arguments, we show that the propagat...
  5. Electrodynamic Casimir effect in a medium-filled wedge. II.

    Physical Review E 80(2 Pt 1):021125 (2009) PMID 19792095

    We consider the Casimir energy in a geometry of an infinite magnetodielectric wedge closed by a circularly cylindrical, perfectly reflecting arc embedded in another magnetodielectric medium, under the condition that the speed of light be the same in both media. An expression for the Casimir ener...
  6. Cooperation in an evolutionary prisoner's dilemma on networks with degree-degree correlations.

    Physical Review E 80(2 Pt 2):026105 (2009) PMID 19792198

    We study the effects of degree-degree correlations on the success of cooperation in an evolutionary prisoner's dilemma played on a random network. When degree-degree correlations are not present, the standardized variance of the network's degree distribution has been shown to be an accurate anal...
  7. Hierarchical self-assembly of asymmetric amphiphatic spherical colloidal particles.

    Physical Review E 80(2 Pt 1):021404 (2009) PMID 19792121

    From dumbbells to fcc crystals, we study the self-assembly pathway of amphiphatic spherical colloidal particles as a function of the size of the hydrophobic region using molecular-dynamics simulations. Specifically, we analyze how local interparticle interactions correlate to the final self-asse...
  8. Scaling theory for steady-state plastic flows in amorphous solids.

    Physical Review E 80(2 Pt 2):026128 (2009) PMID 19792221

    Strongly correlated amorphous solids are a class of glass formers whose interparticle potential admits an approximate inverse power-law form in a relevant range of interparticle distances. We study the steady-state plastic flow of such systems, first in the athermal quasistatic limit and second ...
  9. Time-resolved fluorescence spectroscopy of two-photon laser-excited 8p, 9p, 5f, and 6f levels in neutral xenon.

    Physical Review E 80(2 Pt 2):026401 (2009) PMID 19792262

    Laser-induced fluorescence of two-photon excited 8p, 9p, J=0, 2 and 5f, 6f, J=2 levels in neutral xenon has been investigated in the pressure regime between 4 and 120 Pa. Radiative lifetimes and collisional deactivation rates have been deduced especially for the 5f[3/2](2), 5f[5/2](2), and 8p[1/...
  10. Multiplicative cascades and seismicity in natural time.

    Physical Review E 80(2 Pt 1):022102 (2009) PMID 19792180

    Natural time chi enables the distinction of two origins of self-similarity, i.e., the process memory and the process increments infinite variance. Employing multiplicative cascades in natural time, the most probable value of the variance kappa(1)(is identical to chi(2)-chi(2))is explicitly relat...