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We elaborate the frame dependence of the angular conditions for spin-1 formfactors. An extra angular condition is found in addition to the usual angularcondition relating the four helicity amplitudes. Investigating theframe-dependence of the angular conditions, we find that the extra angularcondition is in general as complicated as the usual one, although it becomesvery simple in the $q^+ = 0$ frame involving only two helicity amplitudes. Itis confirmed that the angular conditions are identical in frames that areconnected by kinematical transformations. The high $Q^2$ behaviors of thephysical form factors and the limiting behaviors in special reference framesare also discussed.Comment: 29 pages RevTeX. submitted to Phys. Rev.

Frame dependence of spin-one angular conditions in light front dynamics