Progress in superconductivity

Recent progress in weak-coupling color superconductivity

We have calculated the polarization tensor Π ab (P ), a, b = 1, . . . , 8, γ, for gluons and photons in different colorsuperconducting phases. We have explicitly computed its zero-energy, low-momentum limit for the two-flavor color superconducting (2SC), color-flavor-locking (CFL), polar, and color-spin-locking (CSL) phases, which yield the Debye and Meissner masses. These masses determine the ...

Recent Progress in Allergen Immunotherapy

The efficacy of allergen immunotherapy for the treatment of allergic rhinoconjunctivitis with or without seasonal bronchial asthma and anaphylaxis caused by the sting of the hymenoptera class of insects has been clearly demonstrated in numerous well-designed, placebo-controlled trials. Immunotherapy whether by subcutaneous injection of allergen extract or by oral/sublingual routes modifies peri...

superconductivity ∗

We present a 2+1-dimensional lattice model for the copper oxide superconductors and their parent compounds, in which both the charge and spin degrees of freedom are treated dynamically. The spin-charge coupling parameter is associated to the doping fraction in the cuprates. The model is able to account for the various phases of the cuprates and their properties, not only at low and intermediate...

Superconductivity in the cuprates

We evaluate numerically several superconducting correlation functions in a generalized t − J model derived for hole-doped CuO2 planes. The model includes a three-site term t similar to that obtained in the large U limit of the Hubbard model but of opposite sign for realistic O-O hopping. For realistic parameters we obtain strong evidence of superconductivity of predominantly dx2−y2 character. T...

Superconductivity in Nanoscale Systems