Tensor formalisms

Rarita-Schwinger

Other spin formalisms

Covariant Tensor formalisms

[1]

Non-covariant tensor formalisms

[2]

Spin-projection formalisms

[1]

A. V. Anisovich, V. V. Anisovich, V. N. Markov, M. A. Matveev, and A. V. Sarantsev, “Moment-operator expansion for the two-meson, two-photon and fermion–antifermion states,” Journal of Physics G: Nuclear and Particle Physics, vol. 28, no. 1, pp. 15–32, Jan. 2002, 10.1088/0954-3899/28/1/302.

[2]

C. Zemach, “Use of Angular-Momentum Tensors,” Physical Review, vol. 140, no. 1B, pp. B97–B108, Oct. 1965, 10.1103/PhysRev.140.B97.