Superconductivity: A testing ground for models of confinement
The interaction of a magnetic monopole-antimonopole pair in a superconductor is calculated as a function of their separation and the value of the Landau-Ginzburg parameter. This direct numerical result is then compared to the bag approximation to the same interaction in a superconducting medium. The actual potential exhibits the same general features as those obtained in the bag calculation. If the bag pressure is used as a phenomenological parameter, rather than the value fixed by the superconducting energy density, the agreement is excellent. Numerically the actual problem was actually no more difficult than the bag calculation. The interaction between magnetic monopoles and antimonopoles in the superconducting vacuum state is similar to the interaction of heavy colored quarks in a flux-confining physical QCD vacuum state. This means that our results are probably a good indication of the general behavior of the QCD potential and of the reliability of the bag approximation in the calculation of this potential. Our results also show that the bag model is a good approximation to a dual superconductor. This indicates that a dual superconducting picture of QCD would lead to the same heavy-quark potential and perhaps retain more of the physics than the bag model.
- Research Organization:
- Physics Department, University of Utah, Salt Lake City, Utah 84112
- OSTI ID:
- 5643973
- Journal Information:
- Phys. Rev. D; (United States), Vol. 37:2
- Country of Publication:
- United States
- Language:
- English
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Related Subjects
75 CONDENSED MATTER PHYSICS
SUPERCONDUCTIVITY AND SUPERFLUIDITY
BAG MODEL
TESTING
SUPERCONDUCTORS
MAGNETIC MONOPOLES
COLOR MODEL
ENERGY DENSITY
FIELD EQUATIONS
GINZBURG-LANDAU THEORY
GREEN FUNCTION
MAGNETIC FLUX
QUANTUM CHROMODYNAMICS
QUARKS
VACUUM STATES
COMPOSITE MODELS
ELEMENTARY PARTICLES
EQUATIONS
EXTENDED PARTICLE MODEL
FIELD THEORIES
FUNCTIONS
MATHEMATICAL MODELS
MONOPOLES
PARTICLE MODELS
POSTULATED PARTICLES
QUANTUM FIELD THEORY
QUARK MODEL
645400* - High Energy Physics- Field Theory
656100 - Condensed Matter Physics- Superconductivity