منابع مشابه
Spontaneously broken color
The vacuum of QCD is characterized by the Higgs mechanism. Color is " spontaneously broken " by a quark-antiquark condensate in the octet representation. The massive gluons carry integer electric charges and are identified with the vector mesons. The fermionic ex-citations consist of the low mass baryon octet and a singlet. The interactions between these particles and the light pseudoscalar oct...
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متن کاملSpontaneously broken quark helicity symmetry
Abstract We show how quark helicity symmetry can be spontaneously broken in SU(N) gauge theory when that theory is quantized in the light-cone representation. The symmetry breaking is implemented by induced operators. These operators result from the fact that the vacuum is not trivial, but involves a condensate of fermionic zero modes. We show that the light-cone eigenvalue problem can be equiv...
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A new mechanism for breaking an internal symmetry spontaneously is discussed, which is intermediate between the Nambu-Goldstone and Wigner modes of symmetry breaking. Here the qq̄ sea takes the role of the vacuum of the Nambu-Goldstone case. Flavor symmetry becomes a discrete permutation symmetry of the valence quarks with respect to the sea quarks, which can be spontaneously broken without gene...
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ژورنال
عنوان ژورنال: Physical Review D
سال: 2001
ISSN: 0556-2821,1089-4918
DOI: 10.1103/physrevd.64.036003