## Search

Now showing items 1-10 of 21

#### Transmutation of the vicinal surface exponent due to gravity

(American Physical Society, 1988-04)

Near the edge of a facet, vicinal surfaces curve away from the plane with exponent (3/2. With gravity normal to the facet the exponent may change to 3. Generally, there will be a crossover from 3 to (3/2 as the facet edge ...

#### New phase in the one-dimensional t-J model

(American Physical Society, 1993-05)

A new phase of a gas of pairs of electrons bounded in a singlet state is found in the one-dimensional t -J model for J > 2t and the density of electrons less than 0.2. This phase was conjectured in the study of the ...

#### equilibrium budding and vesiculation in the curvature model of fluid lipid vesicles

(American Physical Society, 1991-06)

According to a model introduced by Helfrich [Z. Naturforsch. 28c, 693 (1973)], the shape of a closed lipid vesicle is determined by minimization of the total bending energy at fixed surface area and enclosed volume. We ...

#### Field-induced vacancy localization in a driven lattice gas: Scaling of steady states

(American Physical Society, 2000-01)

With the help of Monte Carlo simulations and a mean-field theory, we investigate the ordered steady-state structures resulting from the motion of a single vacancy on a periodic lattice which is filled with two species of ...

#### Effects of gravity on equilibrium crystal shapes: Droplets hung on a wall

(American Physical Society, 1987-04)

General properties of equilibrium crystal shapes pinned on a vertical wall and subject to gravity are sought. For two-dimensional crystals, or three-dimensional ones with axial symmetry held in suitable geometries, we are ...

#### Stationary correlations for a far-from-equilibrium spin chain

(American Physical Society, 2002-10)

A kinetic one-dimensional Ising model on a ring evolves according to a generalization of Glauber rates, such that spins at even (odd) lattice sites experience a temperature T(e) (T(o)). Detailed balance is violated so that ...

#### Bound states of hydrogen atom in a theory with minimal length uncertainty relations

(AIP Publishing, 2007-05)

The following properties of bound states of hydrogen atom in a theory with noncommuting position operators are investigated: their number, multiplicities, accidental degeneracy, localization, and dependence on the values ...

#### Position and length operators in a theory with minimal length

(AIP Publishing, 2007-05)

Relations between the notions of fundamental and minimal lengths, and duality, in a system with minimal length uncertainty relations are examined. Self-adjoint versions of operators relevant to the problem, and their ...

#### Driven diffusive systems: How steady states depend on dynamics

(American Physical Society, 2004-06)

In contrast to equilibrium systems, nonequilibrium steady states depend explicitly on the underlying dynamics. Using Monte Carlo simulations with Metropolis, Glauber, and heat bath rates, we illustrate this expectation for ...

#### Strongly anisotropic roughness in surfaces driven by an oblique particle flux

(American Physical Society, 2006-05)

Using field theoretic renormalization, an MBE-type growth process with an obliquely incident influx of atoms is examined. The projection of the beam on the substrate plane selects a "parallel" direction, with rotational ...