Confinement of monopole field lines in a superconductor at T {ne} 0

Journal Article · Fri Feb 15 04:00:00 EST 2008 · Annals of Physics (New York)

DOI:https://doi.org/10.1016/j.aop.2007.02.007· OSTI ID:21077683

Cardoso, Marco ^[1]; Bicudo, Pedro ^[1]; Sacramento, Pedro D ^[1]

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1. Departamento de Fisica, Instituto Superior Tecnico, Universidade Tecnica de Lisboa, Av. Rovisco Pais, 1049-001 Lisboa (Portugal)

We apply the Bogoliubov-de Gennes equations to the confinement of a monopole-antimonopole pair in a superconductor. This is related to the problem of a quark-antiquark pair bound by a confining string, consisting of a colour-electric flux tube, dual to the magnetic vortex of type-II superconductors. We study the confinement of the field lines due to the superconducting state and calculate the effective potential between the two monopoles. The monopoles can be simulated in a real experiment inserting two long and thin magnetic rods. At short distances the potential is Coulombic and at large distances the potential is linear, as previously determined solving the Ginzburg-Landau equations. The magnetic field lines and the string tension are also studied as a function of the temperature T. Because we take into account the explicit fermionic degrees of freedom, this work may open new perspectives to the breaking of chiral symmetry or to colour superconductivity.

• OSTI ID: 21077683
• Journal Information: Annals of Physics (New York), Journal Name: Annals of Physics (New York) Journal Issue: 2 Vol. 323; ISSN 0003-4916; ISSN APNYA6
• Country of Publication: United States
• Language: English

Related Subjects

75 CONDENSED MATTER PHYSICS
SUPERCONDUCTIVITY AND SUPERFLUIDITY
BOGOLYUBOV METHOD
CHIRAL SYMMETRY
DEGREES OF FREEDOM
EQUATIONS
FERMIONS
GINZBURG-LANDAU THEORY
MAGNETIC FIELDS
MONOPOLES
POTENTIALS
QUARK-ANTIQUARK INTERACTIONS
RODS
SIMULATION
SUPERCONDUCTIVITY
TUBES
TYPE-II SUPERCONDUCTORS