The action of non-spinning particles in scalar gravity is(adsbygoogle = window.adsbygoogle || []).push({});

[tex]S=-\int{\sqrt{-g}(\frac{1}{8\pi}g^{\mu\nu}\Phi_{,\mu}\Phi_{,\nu}-\rho e^{\Phi})d^4x}[/tex]

where [tex]\rho[/tex] presents the comoving density.

Now, I want to know the formula when particles with classical spin.

Thank you!

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# Question: Spin particles in scalar gravitational field

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