Goldstone Bosons

Some articles on goldstone bosons, goldstone, bosons, boson:

Symmetries and Symmetry Breaking - Symmetries of The QCD Vacuum
... The Goldstone bosons of the symmetry breaking are the pseudoscalar mesons ... only the u and d quarks are treated as massless, the three pions are the Goldstone bosons ... eight pseudoscalar mesons of the quark model become Goldstone bosons ...
Higgs Boson - History
... Goldstone's theorem, relating to continuous symmetries within some theories, also appeared to rule out many obvious solutions, since it appeared to show that zero-mass ... and spontaneous symmetry breaking, the Nambu–Goldstone massless mode can combine with the massless gauge field modes to produce a physical massive vector field ... experts." The Higgs mechanism is a process by which vector bosons can get rest mass without explicitly breaking gauge invariance, as a byproduct of ...
Higgs Boson - Theoretical Properties - Theoretical Need For The Higgs
... ever flip helicity as required for mass, so they must be massless.) W and Z bosons are observed to have mass, but a boson mass term contains terms which clearly depend on the choice ... Therefore it seems that none of the standard model fermions or bosons could "begin" with mass as an inbuilt property except by abandoning gauge invariance ... unexpected massless particles and long-range forces (seemingly an inevitable consequence of Goldstone's theorem) which did not actually seem to exist in nature ...
Pseudo-Goldstone Boson
... Pseudo-Goldstone bosons arise in a quantum field theory with both spontaneous and explicit symmetry breaking ... would be spontaneously broken (hidden), and would thus engender massless Goldstone bosons ... The additional explicit symmetry breaking gives these bosons a small mass ...
Technicolor (physics) - Early Technicolor
... grand-unification mass scale), and with the Higgs boson mass Mphysical = 100–500 GeV, the mass is tuned to at least a part in 1025 ... technifermions acquire a dynamical mass, and a number of massless Goldstone bosons result ... doublets and right-handed singlets, three linear combinations of these Goldstone bosons couple to three of the electroweak gauge currents ...