Dynamics of unbound vortices in the 2-dimensional XY and anisotropic Heisenberg models

Conference · Thu Dec 31 23:00:00 EST 1987

OSTI ID:6759592

Mertens, F G; Bishop, A R; Gouvea, M E; Wysin, G M

Assuming an ideal gas of vortices above the Kosterlitz-Thouless transition temperature, the dynamic form factors are calculated. For the in-plane correlations a Lorentzian central peak is predicted which is independent of the vortex size and shape. However, for the out-of-plane correlations the velocity dependence of the vortex structure is decisive for the occurrence of a Gaussian central peak. Both results are in good agreement with combined Monte Carlo-molecular dynamics simulations. 8 refs., 1 fig.

• Research Organization: Los Alamos National Lab., NM (USA)
• DOE Contract Number: W-7405-ENG-36
• OSTI ID: 6759592
• Report Number(s): LA-UR-88-2988; CONF-880705-9; ON: DE89000371
• Country of Publication: United States
• Language: English

Related Subjects

657000* -- Theoretical & Mathematical Physics
71 CLASSICAL AND QUANTUM MECHANICS
GENERAL PHYSICS
CORRELATIONS
CRITICAL TEMPERATURE
CRYSTAL MODELS
FORM FACTORS
HEISENBERG MODEL
MAGNETISM
MATHEMATICAL MODELS
MONTE CARLO METHOD
NONLINEAR PROBLEMS
PARTICLE PROPERTIES
PHYSICAL PROPERTIES
THERMODYNAMIC PROPERTIES
TRANSITION TEMPERATURE
TWO-DIMENSIONAL CALCULATIONS
VORTICES