Stable gapless superconductivity at strong coupling

被引：27

作者：

Kitazawa, Masakiyo ^{[1
]}

Rischke, Dirk H.

Shovkovy, Igor A.

机构：

[1] Goethe Univ Frankfurt, Inst Theoret Phys, D-60438 Frankfurt, Germany

[2] Kyoto Univ, Yukawa Inst Theoret Phys, Kyoto 6068502, Japan

[3] Goethe Univ Frankfurt, Frankfurt Inst Adv Studies, D-60438 Frankfurt, Germany

来源：

PHYSICS LETTERS B | 2006年 / 637卷 / 06期

基金：

日本学术振兴会;

关键词：

D O I：

10.1016/j.physletb.2006.04.054

中图分类号：

P1 [天文学];

学科分类号：

0704 ;

摘要：

We study cross-flavor Cooper pairing in a relativistic system of two fermion species with mismatched Fermi surfaces. We find that there exist gapless phases which are characterized by either one or two gapless nodes in the energy spectra of their quasiparticles. An analysis of the current-current correlator reveals that, at strong coupling, both of these gapless phases can be free of magnetic instabilities. This is in contrast to the weak-coupling case where there are always two gapless nodes and the phase becomes magnetically unstable. (c) 2006 Elsevier B.V. All rights reserved.

引用

页码：347 / 353

页数：7

共 68 条

[1] Extensive study of phase diagram for charge-neutral homogeneous quark matter affected by dynamical chiral condensation: unified picture for thermal unpairing transitions from weak to strong coupling [J].

Abuki, H ;

Kunihiro, T .

NUCLEAR PHYSICS A, 2006, 768 (1-2) :118-159

[2] How do chiral condensates affect color superconducting quark matter under charge neutrality constraints? [J].

Abuki, H ;

Kitazawa, M ;

Kunihiro, T .

PHYSICS LETTERS B, 2005, 615 (1-2) :102-110

[3] Structural change of Cooper pairs and momentum-dependent gap in color superconductivity [J].

Abuki, H ;

Hatsuda, T ;

Itakura, K .

PHYSICAL REVIEW D, 2002, 65 (07) :740141-7401414

[4] Color-flavor locking and chiral symmetry breaking in high density QCD [J].

Alford, M ;

Rajagopal, K ;

Wilczek, F .

NUCLEAR PHYSICS B, 1999, 537 (1-3) :443-458

[5] QCD at finite baryon density: nucleon droplets and color superconductivity [J].

Alford, M ;

Rajagopal, K ;

Wilczek, F .

PHYSICS LETTERS B, 1998, 422 (1-4) :247-256

[6] Evaluating the gapless color-flavor locked phase [J].

Alford, M ;

Kouvaris, C ;

Rajagopal, K .

PHYSICAL REVIEW D, 2005, 71 (05) :1-19

[7] Photons in gapless colour-flavour-locked quark matter [J].

Alford, M ;

Wang, Q .

JOURNAL OF PHYSICS G-NUCLEAR AND PARTICLE PHYSICS, 2005, 31 (07) :719-738

[8] Gapless color-flavor-locked quark matter [J].

Alford, M ;

Kouvaris, C ;

Rajagopal, K .

PHYSICAL REVIEW LETTERS, 2004, 92 (22) :222001-1

[9] Color-superconducting quark matter [J].

Alford, M .

ANNUAL REVIEW OF NUCLEAR AND PARTICLE SCIENCE, 2001, 51 :131-+

[10] Absence of two-flavor color superconductivity in compact stars [J].

Alford, M ;

Rajagopal, K .

JOURNAL OF HIGH ENERGY PHYSICS, 2002, (06) :713-730

← 1 2 3 4 5 6 7 →