Fluctuation-induced couplings between defect lines or particle chains

摘要: One-dimensional structures such as defect lines or chains of dipolar particles are generally subject to strong Landau-Peierls thermal fluctuations. Coupling between these fluctuations in parallel may lead an attractive force, analogous the London a repulsive force entropic origin. We analyze forces for electric dipoles and flux isotropic superconductors. In first case is attractive, can significantly change Hamaker constant, which governs attraction colloidal particles. second case, over much magnetic field-temperature phase diagram repulsive, dominates direct interaction lines.