Massless Torsion Fields.I : The Case α+2a/3≠0 : Particles and Fields

概要

論文の詳細を見る
Gravitational waves in Poincare gauge theory are systematically examined under special parameter conditions which permit several massless fields. Masses of torsion fields are expressed by combinations of ten parameters, a_1〜a_6, α,β,γ and a, which are contained in gravitational Lagrangian. In the case with α+2a/ 3≠0, the torsion fields with spin^<parity>=2^± must be massive or frozen, 1^- or 1^+ field can be massless but 0^+ or 0^- field cannot be taken massless. Under parameter conditions which eliminate the 0^+ or 0^- field, the gravitational field equations have gauge symmetries which make 1^- or 1^+ field divergence free, respectively. Requiring positive semi-definiteness of the mass and positivity of the energy of the torsion fields, we obtain multiplets, including massless fields, of the torsion fields which can coexist with each other.
理論物理学刊行会の論文
1984-03-25