## Search

Now showing items 161-169 of 169

#### Phase transitions: renormalization and scaling

(Vch Publ., 1995)

#### Least-squares finite element approximations to solutions of interface problems

(Siam Publications, 1998-02)

A least-squares finite element method for second-order elliptic boundary value problems having interfaces due to discontinuous media properties is proposed and analyzed. Both Dirichlet and Neumann boundary data are treated. ...

#### Continuum theory of vacancy-mediated diffusion

(American Physical Society, 1999-06)

We present and solve a continuum theory of vacancy-mediated diffusion (as evidenced, for example, in the vacancy driven motion of tracers in crystals). We restrict our attention to ultralow vacancy densities, so that a ...

#### Structure of the subducting Nazca plate beneath Peru

(American Geophysical Union, 1994-05)

Arrival times from intermediate-depth (110-150 km) earthquakes within the region of flat subduction beneath the subandean zone and foreland basins of east-central Peru provide constraints on the geometry and velocity ...

#### Delta isobar masses, large N-c relations, and the quark model

(American Physical Society, 1999-01-01)

Motivated by recent remarks on the Delta(+) mass and comparisons between the quark model and relations based on large-iri, with perturbative flavor breaking, two sets of Delta masses consistent with these constraints are ...

#### Energies and residues of the nucleon resonances N(1535) and N(1650)

(American Physical Society, 1998-12)

We extract pole positions for the N(1535) and N(1650) resonances using two different models. The positions are determined from fits to different subsets of the existing pi N --> pi N, pi N --> eta N, and gamma p --> eta p ...

#### Pole versus Breit-Wigner resonance description of the orbitally excited baryons

(American Physical Society, 1999-06)

We consider the masses used in recent studies involving the nonstrange sector of the l = 1 baryons. The use of T-matrix and K-matrix poles versus the conventional Breit-Wigner masses is discussed within the context of a ...

#### Comment on "Evidence for Narrow Baryon Resonances in Inelastic ρρ Scattering"

(American Physical Society, 1998-08-10)

In a recent Letter [1], Tatischeff et al. claimed evidence for three neutral baryon resonances <i>N*</i> between the nucleon and the Δ(1232). Two of these have masses <i>M</i> = 1004 and 1044 MeV below <i>m<sub>N</sub></i> ...