Now showing items 1-4 of 4
Pressure impact on the structure, elasticity, and electron density distribution of CaSi2O5
(American Physical Society, 2013-05)
Ab initio molecular dynamics simulations were used to reveal the mechanism of the fivefold to sixfold transition in Si coordination numbers of CaSi2O5. The longest first-neighbor Si-O distance drops from 2.8 to 1.8 angstrom ...
Power spectrum of the current in systems with a conserved density
(American Physical Society, 1991-09)
Motivated by recent studies of model sandpiles, the power spectrum S of the current in dissipative dynamical systems with a conserved density is investigated. In contrast to self-organized criticality exhibited in certain ...
Effects of translational symmetry breaking induced by the boundaries in a driven diffusive system
(American Physical Society, 1991-04)
We study the effects of the boundary conditions in a driven diffusive lattice-gas model which is known to display kinetic phase transitions. We find, in the case of attractive interaction, that a boundary-condition-induced ...
Critical behavior at m-axial Lifshitz points: Field-theory analysis and epsilon-expansion results
(American Physical Society, 2000-11)
The critical behavior of d-dimensional systems with an n-component order parameter is reconsidered at (m,d,n)-lifshitz points, where a wave-vector instability occurs in an m-dimensional subspace of R-d. Our aim is to sort ...