The Meissner Effect in a Two Flavor Loff Color Superconductor
نویسنده
چکیده
We calculate the magnetic polarization tensor of the photon and of the gluons in a two flavor color superconductor with a LOFF pairing that consists of a single plane wave. We show that at zero temperature and within the range of the values of the Fermi sea displacement that favors the LOFF state, all the eigenvalues of the magnetic polarization tensor are non-negative. Therefore the chromomagnetic instabilities pertaining to a gapless color superconductor disappear. [email protected], [email protected]
منابع مشابه
Chromomagnetic Instability and the Loff State in a Two Flavor Color Superconductor
We explore the relation between the chromomagnetic instability of a homogeneous two flavor color superconductor and the LOFF state. We perturb the free energy of the 2SC by generating a small net momentum for the quark pair. We find that the imaginary Meissner mass of a particular gluon implies that the LOFF state is energetically favored. [email protected], [email protected]....
متن کاملCharacterizing the Larkin-Ovchinnikov-Fulde-Ferrel phase induced by the chromomagnetic instability
We discuss possible destinations from the chromomagnetic instability in color superconductors with Fermi surface mismatch δμ. In the two-flavor superconducting (2SC) phase we calculate the effective potential for color vector potentials Aα which are interpreted as the net momenta q of pairing in the Larkin-Ovchinnikov-Fulde-Ferrel (LOFF) phase. When 1/ √ 2 < δμ/∆ < 1 where ∆ is the gap energy, ...
متن کاملMixing and Screening of Photons and Gluons in a Color Superconductor
We calculate the Debye and Meissner masses of photons and gluons for a spin-one color superconductor in the polar and color-spin-locked phases as well as for a spin-zero color superconductor in the 2SC and color-flavor-locked phases. A general derivation for photon-gluon mixing is provided in terms of the QCD partition function. We show qualitatively and quantitatively which of the gauge bosons...
متن کاملRecent 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 ...
متن کاملA Neutral Two Flavor Loff Color Superconductor
In this paper we construct analytically a LOFF color superconducting state that is both color and charge neutral using the weak coupling approximation. We demonstrate that this state is free from chromomagnetic instabilities. Its relevance to the realistic quark matter at moderately high baryon density is discussed. [email protected], [email protected], [email protected]...
متن کامل