Non-perturbative couplings and color superconductivity

被引:73
作者
Evans, N
Hsu, SDH
Schwetz, M
机构
[1] Boston Univ, Dept Phys, Boston, MA 02215 USA
[2] Univ Oregon, Dept Phys, Eugene, OR 97403 USA
[3] Rutgers State Univ, Dept Phys & Astron, Piscataway, NJ 08855 USA
关键词
D O I
10.1016/S0370-2693(99)00093-3
中图分类号
P1 [天文学];
学科分类号
0704 ;
摘要
Quark matter at sufficiently high density exhibits color superconductivity, due to attractive gluonic interactions. At lower densities of order A(QCD)(3), it has been proposed that instanton generated vertices may play an important role in the Cooper pair formation. We study the renormalization group flow to the Fermi surface of the full set of couplings generated by gluonic and instanton interactions. In earlier work we showed that if the gluonic interactions dominate at the matching scale, their running determines the: scale of the Cooper pair formation Delta. Here we consider all possibilities, including the one in which the instanton interactions dominate all others at the matching scale, In the latter case we find that a number of additional induced couplings (including the gluonic ones) reach their Landau poles almost simultaneously with the instanton vertex. presumably all contribute to the Cooper pair formation. The most important consequence of including all the couplings is a large increase in the gap size Delta. (C) 1999 Published by Elsevier Science B.V. All rights reserved.
引用
收藏
页码:281 / 287
页数:7
相关论文
共 10 条
[1]   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
[2]  
ALFORD M, HEPPH9804403
[3]  
Ashcroft N.W., 1976, Solid state physics Holt, Rinehart and Winston, Vfirst
[4]   SUPERFLUIDITY IN ULTRA-RELATIVISTIC QUARK MATTER [J].
BAILIN, D ;
LOVE, A .
NUCLEAR PHYSICS B, 1981, 190 (01) :175-187
[5]   PERTURBATION-THEORY OF THE FERMI-SURFACE IN A QUANTUM LIQUID - A GENERAL QUASI-PARTICLE FORMALISM AND ONE-DIMENSIONAL SYSTEMS [J].
BENFATTO, G ;
GALLAVOTTI, G .
JOURNAL OF STATISTICAL PHYSICS, 1990, 59 (3-4) :541-664
[6]  
EVANS N, HEPPH9808444
[7]   FERMIONS AND GAUGE VECTOR-MESONS AT FINITE TEMPERATURE AND DENSITY .1. FORMAL TECHNIQUES [J].
FREEDMAN, BA ;
MCLERRAN, LD .
PHYSICAL REVIEW D, 1977, 16 (04) :1130-1146
[8]   FERMIONS AND GAUGE VECTOR-MESONS AT FINITE TEMPERATURE AND DENSITY .2. GROUND-STATE ENERGY OF A RELATIVISTIC ELECTRON-GAS [J].
FREEDMAN, BA ;
MCLERRAN, LD .
PHYSICAL REVIEW D, 1977, 16 (04) :1147-1168
[9]   FERMIONS AND GAUGE VECTOR-MESONS AT FINITE TEMPERATURE AND DENSITY .3. GROUND-STATE ENERGY OF A RELATIVISTIC QUARK GAS [J].
FREEDMAN, BA ;
MCLERRAN, LD .
PHYSICAL REVIEW D, 1977, 16 (04) :1169-1185
[10]   Diquark bose condensates in high density matter and instantons [J].
Rapp, R ;
Schafer, T ;
Shuryak, E ;
Velkovsky, M .
PHYSICAL REVIEW LETTERS, 1998, 81 (01) :53-56