Diquark Bose condensates in high density matter and instantons
Diquark Bose condensates in high density matter and instantons
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DOI：
10.1103/physrevlett.81.53
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发表时间：
1997-11
影响因子：
8.6
通讯作者：
R. Rapp;T. Schaefer;E. Shuryak;M. Velkovsky
中科院分区：
文献类型：
--
作者：
R. Rapp;T. Schaefer;E. Shuryak;M. Velkovsky
瞬子导致上夸克和下夸克与自旋零和反对称色波函数之间的强相关性。在冷而致密的物质中，n{sub b}{gt}n{sub c}{approx_equal}1 fm {sup {minus}3}和T{lt}T{sub c}{approximate}50 slimspthinspMeV，这些对玻色凝聚，取代了通常的{l_angle}{bar q}q{r_angle}凝聚并恢复了手性对称性。在高密度下，基态是彩色超导体，其中双夸克扮演库珀对的角色。 QCD 提供了一个有趣的玩具模型，有两种颜色：它具有与 {l_angle}{bar q}q{r_angle} 和 {l_angle}qq{r_angle} 凝聚态相关的粒子反粒子对称性。 {版权} {ital 1998} {ital 美国物理学会}
Instantons lead to strong correlations between up and down quarks with spin zero and antisymmetric color wave functions. In cold and dense matter, n{sub b}{gt}n{sub c}{approx_equal}1 fm {sup {minus}3} and T{lt}T{sub c}{approximately}50 thinspthinspMeV, these pairs Bose condense, replacing the usual {l_angle}{bar q}q{r_angle} condensate and restoring chiral symmetry. At high density, the ground state is a color superconductor in which diquarks play the role of Cooper pairs. An interesting toy model is provided by QCD with two colors: it has a particle-antiparticle symmetry which relates {l_angle}{bar q}q{r_angle} and {l_angle}qq{r_angle} condensates. {copyright} {ital 1998} {ital The American Physical Society}