Pairing symmetry and long-range pair potential in a weak-coupling theory of superconductivity
نویسندگان
چکیده
منابع مشابه
Color superconductivity in weak coupling
Cooper’s theorem [1–3] implies that if there is an attractive interaction in a cold Fermi sea, the system is unstable with respect to formation of a particle-particle condensate. In QCD, single-gluon exchange between quarks of different color generates an attractive interaction in the color-antitriplet channel [4]. Thus, it appears unavoidable that color superconductivity occurs in dense quark ...
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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 ...
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Recent developments in weak-coupling color superconductivity are reviewed. These developments are as follows. The mean field gap equation is solved for most common superconducting phases up to subleading order; BCS relation is found to be violated in color-flavor-locking and color-spin-locking phases due to the two-gaps structure of the order parameter; The Debye and Meissner masses of gluons a...
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We investigate the superconductivity of a three-dimensional d-p model with a multilayer perovskite structure on the basis of the second-order perturabation theory within the weak coupling framework. Our model has been designed with multilayer high-Tc superconducting cuprates in mind. In our model, multiple Fermi surfaces appear, and the component of a superconducting gap function develops on ea...
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A. V. Chubukov,1 D. V. Efremov,2 and I. Eremin3,4 1Department of Physics, University of Wisconsin–Madison, Madison, Wisconsin 53706, USA 2Institut für Theoretische Physik, Technische Universität Dresden, 01062 Dresden, Germany 3Max-Planck Institut für Physik komplexer Systeme, D-01187 Dresden, Germany 4Institute für Mathematische und Theoretische Physik, TU Braunschweig, D-38106 Braunschweig, G...
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ژورنال
عنوان ژورنال: Physical Review B
سال: 1999
ISSN: 0163-1829,1095-3795
DOI: 10.1103/physrevb.60.6814