Non-existence of Goldstone bosons with non-zero helicity |
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Authors: | D Maison H Reeh |
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Institution: | (1) Max-Planck-Institut für Physik und Astrophysik, München, Germany;(2) Theory Division CERN, CH-1211 Genève 23, Switzerland |
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Abstract: | In a local relativistic quantum field theory a conserved covariant tensor current may lead to a spontaneously broken symmetry if it generates zero mass states from the vacuum (Goldstone theorem). Here it is shown that in addition it is necessary that these massless states have helicity zero if the underlaying state space has a positive metric. |
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