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Showing 2000Show all

8 papers · 1 filter

math-ph2000★ 2 cited

Critical two-point functions and the lace expansion for spread-out high-dimensional percolation and related models

Takashi Hara, Remco van der Hofstad, Gordon Slade

We consider spread-out models of self-avoiding walk, bond percolation, lattice trees and bond lattice animals on the d-dimensional hyper cubic lattice having long finite-range conn…

cond-mat2000★ 140 cited

CaB_6: a new semiconducting material for spin electronics

H. J. Tromp, P. van Gelderen, P. J. Kelly +2

Ferromagnetism was recently observed at unexpectedly high temperatures in La-doped CaB_6. The starting point of all theoretical proposals to explain this observation is a semimetal…

cond-mat.stat-mech2000★ 11 cited

Osmotic Pressure of Solutions Containing Flexible Polymers Subject to an Annealed Molecular Weight Distribution

A. Milchev, J. P. Wittmer, P. van der Schoot +1

The osmotic pressure in equilibrium polymers (EP) in good solvent is investigated by means of a three dimensional off-lattice Monte Carlo simulation. Our results compare well w…

cond-mat.stat-mech2000★ 59 cited

Dynamical Monte Carlo Study of Equilibrium Polymers (II): The Role of Rings

J. P. Wittmer, P. van der Schoot, A. Milchev +1

We investigate by means of a number of different dynamical Monte Carlo simulation methods the self-assembly of equilibrium polymers in dilute, semidilute and concentrated solutions…

cond-mat.mtrl-sci2000★ 51 cited

Ab-initio prediction of the electronic and optical excitations in polythiophene: isolated chains versus bulk polymer

J. -W. van der Horst, P. A. Bobbert, P. H. L. de Jong +3

We calculate the electronic and optical excitations of polythiophene using the GW approximation for the electronic self-energy, and include excitonic effects by solving the electro…

physics.chem-ph2000★ 53 cited

Bond breaking in vibrationally excited methane on transition metal catalysts

R. Milot, A. P. J. Jansen

The role of vibrational excitation of a single mode in the scattering of methane is studied by wave packet simulations of oriented CH4 and CD4 molecules from a flat surface. All ni…

physics.chem-ph2000★ 19 cited

Energy distribution analysis of the wavepacket simulations of CH4 and CD4 scattering

R. Milot, A. P. J. Jansen

The isotope effect in the scattering of methane is studied by wavepacket simulations of oriented CH4 and CD4 molecules from a flat surface including all nine internal vibrations. A…

quant-ph2000★ 4 cited

The Haroche-Ramsey experiment as a generalized measurement

W. M. de Muynck, A. J. A. Hendrikx

A number of atomic beam experiments, related to the Ramsey experiment and a recent experiment by Brune et al., are studied with respect to the question of complementarity. Three di…