Absence of two-flavor color superconductivity in compact stars

被引:228
作者
Alford, M [1 ]
Rajagopal, K
机构
[1] Univ Glasgow, Dept Phys & Astron, Glasgow G12 8QQ, Lanark, Scotland
[2] MIT, Ctr Theoret Phys, Cambridge, MA 02139 USA
来源
JOURNAL OF HIGH ENERGY PHYSICS | 2002年 / 06期
关键词
related astrophysics (neutron stars; supernovae etc.); QCD;
D O I
10.1088/1126-6708/2002/06/031
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
The simplest pattern of color superconductivity involves BCS pairing between up and down quarks. We argue that this "2SC" phase will not arise within a compact star. A macroscopic volume of quark matter must be electrically neutral and must be a color singlet. Satisfying these requirements imposes a significant free energy cost on the 2SC phase, but not on color-flavor locked (CFL) quark matter, in which up, down and strange quarks all pair. As a function of increasing density, therefore, one may see a single phase transition from hadronic matter directly to CFL quark matter. Alternatively, there may be an intervening phase in which the different flavors self-pair, or pair with each other in a non-BCS pattern, such as in a crystalline color superconductor.
引用
收藏
页码:713 / 730
页数:18
相关论文
共 42 条
[31]  
Larkin A. I, 1965, Sov. Phys. JETP, V47, P762
[32]   Opening the crystalline color superconductivity window [J].
Leibovich, AK ;
Rajagopal, K ;
Shuster, E .
PHYSICAL REVIEW D, 2001, 64 (09)
[33]   The effective potential of composite diquark fields and the spectrum of resonances in dense QCD [J].
Miransky, VA ;
Shovkovy, IA ;
Wijewardhana, LCR .
PHYSICS LETTERS B, 1999, 468 (3-4) :270-278
[34]  
OERTEL M, 2002, PHYS REV C, V65
[35]  
Rajagopal K, 2000, ACTA PHYS POL B, V31, P3021
[36]   Enforced electrical neutrality of the color-flavor locked phase [J].
Rajagopal, K ;
Wilczek, F .
PHYSICAL REVIEW LETTERS, 2001, 86 (16) :3492-3495
[37]  
Rajagopal K., HEPPH0011333
[38]   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
[39]   Patterns of symmetry breaking in QCD at high baryon density [J].
Schäfer, T .
NUCLEAR PHYSICS B, 2000, 575 (1-2) :269-284
[40]   Quark description of hadronic phases -: art. no. 074014 [J].
Schäfer, T ;
Wilczek, F .
PHYSICAL REVIEW D, 1999, 60 (07)