I have a question referring to how to compute geodesics of a given spacetime (say, Kerr).
I know that the direct way is via the geodesic equation
$$\frac{d^{2}x^{\mu}}{d\lambda^{2}}+\Gamma^{\mu}_{\nu\kappa}\dot{x}^{\mu}\dot{x}^{\kappa}~=~0.$$
But also read that one can write down the geodesic equations using the Lagrangian formalism. From what I have seen so far, there are two approaches: either to write down the Euler-Lagrange equations with Lagrangian
$$L~=~\frac{1}{2}g_{\mu\nu}\dot{x}^{\mu}\dot{x}^{\nu}.$$
and then Euler-Lagrange equations are exactly the geodesic equations.
OR: write down the Hamiltonian equations using the Lagrangian above, and then use those equations as the geodesic equations.
My question: are Euler-Lagrange and Hamiltonian approaches fully equivalent when it comes to writing down the geodesic equations? Does one have advantage over the other?
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