Diquark Bose Condensates in High Density Matter and Instantons
- Department of Physics and Astronomy, State University of New York, Stony Brook, New York 11794-3800 (United States)
- Institute for Nuclear Theory, Department of Physics, University of Washington, Seattle, Washington 98195 (United States)
- Nuclear Theory Group, Brookhaven National Laboratory, Upton, New York 11973-5000 (United States)
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}
- Research Organization:
- New York State University Research Foundation
- DOE Contract Number:
- FG02-88ER40388; FG06-90ER40561
- OSTI ID:
- 638803
- Journal Information:
- Physical Review Letters, Journal Name: Physical Review Letters Journal Issue: 1 Vol. 81; ISSN 0031-9007; ISSN PRLTAO
- Country of Publication:
- United States
- Language:
- English
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