Condensates Break Chiral Symmetry
نویسنده
چکیده
In the physical vacuum of QCD, the energy density of lightquark fields strongly coupled to slowly varying gluon fields can be negative. The states that drive this energy density lowest are condensates of pairs of quarks and antiquarks of nearly opposite momenta. These quark-antiquark condensates break chiral symmetry. They may also affect other features of hadronic physics, such as the range of the strong force and the confinement of color. February 1, 2008 ∗[email protected] http://kevin.phys.unm.edu/̃ kevin/ 1 The QCD Vacuum The thesis of this note is that the energy density of strongly coupled light quarks can be negative and that this feature of QCD breaks chiral symmetry. The hamiltonian Hq of the u, d, and s quarks Hq = ∑
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Quark-Antiquark Condensates Break Chiral Symmetry
In the physical vacuum of QCD, the energy density of lightquark fields strongly coupled to slowly varying gluon fields can be negative. The states that drive this energy density lowest are condensates of pairs of quarks and antiquarks of nearly opposite momenta. These quark-antiquark condensates break chiral symmetry.
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