Magnetic interactions, the renormalization group and color superconductivity in high density QCD

被引:86
作者
Hsu, SDH [1 ]
Schwetz, M
机构
[1] Univ Oregon, Dept Phys, Eugene, OR 97403 USA
[2] Rutgers State Univ, Dept Phys & Astron, Piscataway, NJ 08855 USA
关键词
QCD; barion density; color superconductivity;
D O I
10.1016/S0550-3213(99)00655-0
中图分类号
O412 [相对论、场论]; O572.2 [粒子物理学];
学科分类号
摘要
We investigate the effect of long range magnetic interactions on the renormalization group (RG) evolution of local Cooper pairing interactions near the Fermi surface in high density QCD. We use an explicit cut-off on momentum modes, with special emphasis on screening effects such as Landau damping, to derive the RG equations in a gauge invariant, weak coupling expansion. We obtain the Landau pole Delta similar to mu g(-5)exp(-3 pi(2)/root 2 g), although the structure of our equations differs from previous results. We also investigate the gap equation, including condensates of higher angular momentum. We show that rotational invariance is unbroken at asymptotically high density, and verify that Delta is the correct value of the gap when higher modes are included in the analysis. (C) 2000 Elsevier Science B.V. All rights reserved.
引用
收藏
页码:211 / 226
页数:16
相关论文
共 28 条
[1]   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
[2]   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
[3]   SUPERFLUIDITY IN ULTRA-RELATIVISTIC QUARK MATTER [J].
BAILIN, D ;
LOVE, A .
NUCLEAR PHYSICS B, 1981, 190 (01) :175-187
[4]   SUPERCONDUCTIVITY IN QUARK MATTER [J].
BAILIN, D ;
LOVE, A .
NUCLEAR PHYSICS B, 1982, 205 (01) :119-129
[5]   SUPERFLUID ORDER IN RELATIVISTIC QUARK MATTER [J].
BAILIN, D ;
LOVE, A .
NUCLEAR PHYSICS B, 1981, 190 (04) :751-766
[6]   SUPERFLUIDITY AND SUPERCONDUCTIVITY IN RELATIVISTIC FERMION SYSTEMS [J].
BAILIN, D ;
LOVE, A .
PHYSICS REPORTS-REVIEW SECTION OF PHYSICS LETTERS, 1984, 107 (06) :325-385
[7]   Color superconductivity and chiral symmetry restoration at non-zero baryon density and temperature [J].
Berges, J ;
Rajagopal, K .
NUCLEAR PHYSICS B, 1999, 538 (1-2) :215-232
[8]   Non-perturbative couplings and color superconductivity [J].
Evans, N ;
Hsu, SDH ;
Schwetz, M .
PHYSICS LETTERS B, 1999, 449 (3-4) :281-287
[9]   An effective field theory approach to color superconductivity at high quark density [J].
Evans, N ;
Hsu, SDH ;
Schwetz, M .
NUCLEAR PHYSICS B, 1999, 551 (1-2) :275-289
[10]  
HANDS S, HEPLAT9902034